| By-election | Date | Incumbent | Party | Winner | Party | Position | 
| East Grinstead | 29 July 1918[30 1] | Henry Cautley |  | Conservative | Henry Cautley |  | Conservative | Recorder of Sunderland | 
| Manchester North East | 16 July 1918[30 1] | J. R. Clynes |  | Labour | J. R. Clynes |  | Labour | Food Controller | 
| Bridgwater | 18 June 1918[30 1] | Robert Sanders |  | Conservative | Robert Sanders |  | Conservative | Treasurer of the Household | 
| Newcastle-upon-Tyne | 13 May 1918[30 1] | Edward Shortt |  | Liberal | Edward Shortt |  | Liberal | Chief Secretary for Ireland | 
| Birmingham West | 25 April 1918[30 1] | Austen Chamberlain |  | Conservative | Austen Chamberlain |  | Conservative | Minister without Portfolio | 
| Southampton | 19 December 1917[30 1] | William Dudley Ward |  | Liberal | William Dudley Ward |  | Liberal | Vice-Chamberlain of the Household | 
| Dublin University | 5 October 1917[30 1] | Arthur Warren Samuels |  | Irish Unionist | Arthur Warren Samuels |  | Irish Unionist | Solicitor-General for Ireland | 
| Norwich | 26 August 1917[30 1] | George Henry Roberts |  | Labour | George Henry Roberts |  | Labour | Minister of Labour | 
| Dundee | 30 July 1917 | Winston Churchill |  | Liberal | Winston Churchill |  | Liberal | Minister of Munitions | 
| Chesterton | 27 July 1917[30 1] | Edwin Samuel Montagu |  | Liberal | Edwin Samuel Montagu |  | Liberal | Secretary of State for India | 
| Fulham | 3 July 1917[30 1] | William Hayes Fisher |  | Conservative | William Hayes Fisher |  | Conservative | President of the Local Government Board | 
| Ealing | 30 April 1917[30 1] | Herbert Nield |  | Conservative | Herbert Nield |  | Conservative | Recorder of York | 
| Belfast South | 9 April 1917[30 1] | James Chambers |  | Irish Unionist | James Chambers |  | Irish Unionist | Solicitor-General for Ireland | 
| Exeter | 7 August 1916[30 1] | Henry Duke |  | Conservative | Henry Duke |  | Conservative | Chief Secretary for Ireland | 
| Berwickshire | 18 July 1916[30 1] | Harold Tennant |  | Liberal | Harold Tennant |  | Liberal | Secretary for Scotland | 
| Widnes | 22 May 1916[30 1] | William Walker |  | Conservative | William Walker |  | Conservative | Seeking re-election[30 2] | 
| Dublin University | 25 April 1916[30 1] | James Campbell |  | Irish Unionist | James Campbell |  | Irish Unionist | Attorney-General for Ireland | 
| Rotherham | 26 January 1916[30 1] | Jack Pease |  | Liberal | Jack Pease |  | Liberal | Postmaster General | 
| Chesterton | 20 January 1916[30 1] | Edwin Samuel Montagu |  | Liberal | Edwin Samuel Montagu |  | Liberal | Chancellor of the Duchy of Lancaster | 
| Cleveland | 9 December 1915 | Herbert Samuel |  | Liberal | Herbert Samuel |  | Liberal | Chancellor of the Duchy of Lancaster | 
| St Helens | 24 November 1915[30 1] | Rigby Swift |  | Conservative | Rigby Swift |  | Conservative | Recorder of Wigan | 
| Kingston | 16 November 1915[30 1] | George Cave |  | Conservative | George Cave |  | Conservative | Solicitor General for England and Wales | 
| Carmarthen District | 17 March 1915[30 1] | W. Llewelyn Williams |  | Liberal | W. Llewelyn Williams |  | Liberal | Recorder of Cardiff | 
| Saffron Walden | 13 February 1915[30 1] | Cecil Beck |  | Liberal | Cecil Beck |  | Liberal | Commissioner of the Treasury | 
| Chesterton | 13 February 1915[30 1] | Edwin Samuel Montagu |  | Liberal | Edwin Samuel Montagu |  | Liberal | Chancellor of the Duchy of Lancaster | 
| Scarborough | 9 February 1915[30 1] | Walter Rea |  | Liberal | Walter Rea |  | Liberal | Commissioner of the Treasury | 
| Swansea District | 13 August 1914[30 1] | Sir David Brynmor Jones |  | Liberal | Sir David Brynmor Jones |  | Liberal | Recorder of Cardiff | 
| 
^ a b c d e f g h i j k l m n o p q r s t u v w x y Uncontested
^ Walker owned a stud of thoroughbred horses. When he was given a contract to supply horses to the Army, questions were raised as to whether this contract disqualified him from the House of Commons, so Walker sought re-election in order to remove doubts as to his position.
30th Parliament (December 1910 – July 1914)[edit] | 
| By-election | Date | Incumbent | Party | Winner | Party | Position | 
| East Fife | 8 April 1914[30 1] | H. H. Asquith |  | Liberal | H. H. Asquith |  | Liberal | Secretary of State for War[30 2] | 
| Bethnal Green South West | 19 February 1914 | Charles Masterman |  | Liberal | Mathew Wilson |  | Conservative | Chancellor of the Duchy of Lancaster[30 2] | 
| Wick District | 8 December 1913 | Robert Munro |  | Liberal | Robert Munro |  | Liberal | Lord Advocate[30 2] | 
| Keighley | 11 November 1913 | Sir Stanley Buckmaster |  | Liberal | Sir Stanley Buckmaster |  | Liberal | Solicitor General for England and Wales[30 2] | 
| Whitechapel | 30 April 1913 | Sir Stuart Samuel |  | Liberal | Sir Stuart Samuel |  | Liberal | Undertook a contract for the Public Service | 
| Ilkeston | 1 July 1912 | J. E. B. Seely |  | Liberal | J. E. B. Seely |  | Liberal | Secretary of State for War[30 2] | 
| Forest of Dean | 30 April 1912[30 1] | Henry Webb |  | Liberal | Henry Webb |  | Liberal | Commissioner of the Treasury[30 2] | 
| Manchester South | 5 March 1912 | Sir Arthur Haworth |  | Liberal | Philip Glazebrook |  | Conservative | Commissioner of the Treasury[30 2] | 
| Glasgow St Rollox | 26 February 1912 | McKinnon Wood |  | Liberal | McKinnon Wood |  | Liberal | Secretary for Scotland[30 2] | 
| Carmarthen District | 29 January 1912 | W. Llewelyn Williams |  | Liberal | W. Llewelyn Williams |  | Liberal | Recorder of Swansea | 
| North Ayrshire | 20 December 1911 | Andrew Anderson |  | Liberal | Duncan Campbell |  | Conservative | Solicitor General for Scotland[30 2] | 
| Bristol East | 3 November 1911 | Charles Hobhouse |  | Liberal | Charles Hobhouse |  | Liberal | Chancellor of the Duchy of Lancaster[30 2] | 
| Middleton | 2 August 1911 | Sir William Adkins |  | Liberal | Sir William Adkins |  | Liberal | Recorder of Nottingham | 
| East Dorset | 29 April 1911[30 1] | Hon Frederick Guest |  | Liberal | Hon Frederick Guest |  | Liberal | Commissioner of the Treasury[30 2] | 
| Arfon | 11 February 1911[30 1] | William Jones |  | Liberal | William Jones |  | Liberal | Commissioner of the Treasury[30 2] | 
| 
^ a b c d Uncontested
^ a b c d e f g h i j k l Seat vacated on appointment to the office noted.
29th Parliament (January 1910 – December 1910)[edit] | 
| By-election | Date | Incumbent | Party | Winner | Party | Position | 
| Walthamstow | 1 November 1910 | John Simon |  | Liberal | Sir John Simon |  | Liberal | Solicitor General for England and Wales[29 1] | 
| Govan | 28 April 1910 | William Hunter |  | Liberal | William Hunter |  | Liberal | Solicitor General for Scotland[29 1] | 
| Reading | 12 March 1910[29 2] | Rufus Isaacs |  | Liberal | Rufus Isaacs |  | Liberal | Solicitor General for England and Wales[29 1] | 
| Shipley | 10 March 1910[29 2] | Percy Illingworth |  | Liberal | Percy Illingworth |  | Liberal | Commissioner of the Treasury[29 1] | 
| Barnstaple | 2 March 1910[29 2] | Ernest Soares |  | Liberal | Ernest Soares |  | Liberal | Commissioner of the Treasury[29 1] | 
| Tower Hamlets St George | 1 March 1910 | William Wedgwood Benn |  | Liberal | William Wedgwood Benn |  | Liberal | Commissioner of the Treasury[29 1] | 
| Swansea District | 28 February 1910[29 2] | Sir David Brynmor Jones |  | Liberal | Sir David Brynmor Jones |  | Liberal | Recorder of Merthyr Tydvil | 
| 
^ a b c d e f Seat vacated on appointment to the office noted.
^ a b c d Uncontested
28th Parliament (1906 – January 1910)[edit] | 
| By-election | Date | Incumbent | Party | Winner | Party | Position | 
| High Peak | 22 July 1909 | Oswald Partington |  | Liberal | Oswald Partington |  | Liberal | Junior Lord of the Treasury[28 1] | 
| Dumfries Burghs | 20 July 1909 | John Gulland |  | Liberal | John Gulland |  | Liberal | Junior Lord of the Treasury[28 1] | 
| Cleveland | 9 July 1909 | Herbert Samuel |  | Liberal | Herbert Samuel |  | Liberal | Chancellor of the Duchy of Lancaster[28 1] | 
| East Denbighshire | 2 April 1909 | Edward Hemmerde |  | Liberal | Edward Hemmerde |  | Liberal | Recorder of Liverpool | 
| Edinburgh South | 4 March 1909 | Arthur Dewar |  | Liberal | Arthur Dewar |  | Liberal | Solicitor General for Scotland[28 1] | 
| Manchester North West | 24 April 1908 | Winston Churchill |  | Liberal | William Joynson-Hicks |  | Conservative | President of the Board of Trade[28 1] | 
| Dewsbury | 23 April 1908 | Walter Runciman |  | Liberal | Walter Runciman |  | Liberal | President of the Board of Education[28 1] | 
| West Carmarthenshire | 26 February 1908[28 2] | John Lloyd Morgan |  | Liberal | John Lloyd Morgan |  | Liberal | Recorder of Swansea | 
| Mid Glamorganshire | 7 February 1908[28 2] | Samuel Thomas Evans |  | Liberal | Samuel Thomas Evans |  | Liberal | Solicitor-General for England and Wales[28 1] | 
| Anglesey | 21 August 1907[28 2] | Ellis Griffith |  | Liberal | Ellis Griffith |  | Liberal | Recorder of Birkenhead | 
| Halifax | 6 March 1907[28 2] | John Henry Whitley |  | Liberal | John Henry Whitley |  | Liberal | Junior Lord of the Treasury[28 1] | 
| North Monmouthshire | 19 February 1907[28 2] | Reginald McKenna |  | Liberal | Reginald McKenna |  | Liberal | President of the Board of Education[28 1] | 
| Mid Glamorganshire | 8 October 1906[28 2] | Samuel Thomas Evans |  | Liberal | Samuel Thomas Evans |  | Liberal | Recorder of Swansea | 
| Westbury | 26 February 1906[28 2] | John Fuller |  | Liberal | John Fuller |  | Liberal | Lord Commissioner of the Treasury[28 1] | 
| 
^ a b c d e f g h i j Seat vacated on appointment to the office noted.
^ a b c d e f g Uncontested
27th Parliament (1900–1906)[edit] | 
| By-election | Date | Incumbent | Party | Winner | Party | Position | 
| Chichester | 2 June 1905 | Lord Edmund Talbot |  | Conservative | Lord Edmund Talbot |  | Conservative | Lord Commissioner of the Treasury[27 1] | 
| Brighton[27 2] | 5 April 1905 | Gerald Loder |  | Conservative | Ernest Villiers |  | Liberal | Lord Commissioner of the Treasury[27 1] | 
| Chorley | 4 November 1903 | David Lindsay |  | Conservative | David Lindsay |  | Conservative | Lord Commissioner of the Treasury[27 1] | 
| Fareham | 28 October 1903[27 3] | Arthur Lee |  | Conservative | Arthur Lee |  | Conservative | Civil Lord of the Admiralty[27 1] | 
| Westhoughton | 24 October 1903[27 3] | Edward Stanley |  | Conservative | Edward Stanley |  | Conservative | Postmaster General[27 1] | 
| Warwick and Leamington | 23 October 1903 | Alfred Lyttelton |  | Liberal Unionist | Alfred Lyttelton |  | Liberal Unionist | Secretary of State for the Colonies[27 1] | 
| Belfast West | 23 October 1903 | H. O. Arnold-Forster |  | Liberal Unionist | H. O. Arnold-Forster |  | Liberal Unionist | Secretary of State for War[27 1] | 
| Londonderry | 8 October 1903[27 3] | James Hamilton |  | Irish Unionist | James Hamilton |  | Irish Unionist | Treasurer of the Household[27 1] | 
| Sevenoaks | 21 August 1902 | Henry Forster |  | Conservative | Henry Forster |  | Conservative | Lord Commissioner of the Treasury[27 1] | 
| East Worcestershire | 15 August 1902[27 3] | Austen Chamberlain |  | Liberal Unionist | Austen Chamberlain |  | Liberal Unionist | Postmaster General[27 1] | 
| Tiverton | 14 August 1902[27 3] | William Walrond |  | Conservative | William Walrond |  | Conservative | Chancellor of the Duchy of Lancaster[27 1] | 
| West Derbyshire | 11 December 1900[27 3] | Victor Cavendish |  | Liberal Unionist | Victor Cavendish |  | Liberal Unionist | Treasurer of the Household[27 1] | 
| Woodbridge | 10 December 1900[27 3] | E. G. Pretyman |  | Conservative | E. G. Pretyman |  | Conservative | Civil Lord of the Admiralty[27 1] | 
| Wellington (Somerset) | 10 December 1900[27 3] | Alexander Acland-Hood |  | Conservative | Alexander Acland-Hood |  | Conservative | Vice-Chamberlain of the Household[27 1] | 
| Guildford | 10 December 1900[27 3] | St John Broderick |  | Conservative | St John Broderick |  | Conservative | Secretary of State for War[27 1] | 
| Preston | 8 December 1900[27 3] | Robert William Hanbury |  | Conservative | Robert William Hanbury |  | Conservative | President of the Board of Agriculture[27 1] | 
| Dover | 8 December 1900[27 3] | George Wyndham |  | Conservative | George Wyndham |  | Conservative | Chief Secretary for Ireland[27 1] | 
| 26th Parliament (1895–1900)[edit] | 
| By-election | Date | Incumbent | Party | Winner | Party | Position | 
| Dublin University | 16 May 19001 | Edward Carson |  | Irish Unionist | Edward Carson |  | Irish Unionist | Solicitor General2 | 
| Oxford | 4 November 18981 | Arthur Annesley |  | Conservative | Arthur Annesley |  | Conservative | Comptroller of the Household2 | 
| Mid Armagh | 21 January 18981 | Dunbar Barton |  | Irish Unionist | Dunbar Barton |  | Irish Unionist | Solicitor General for Ireland2 | 
| Wycombe | 21 February 18961 | Richard Curzon |  | Conservative | Richard Curzon |  | Conservative | Treasurer of the Household2 | 
| Harrow | 30 November 18951 | William Ambrose |  | Conservative | William Ambrose |  | Conservative | Attorney-General of the Duchy of Lancaster2 | 
| Dublin St Stephen's Green | 2 September 1895 | William Kenny |  | Liberal Unionist | William Kenny |  | Liberal Unionist | Solicitor General for Ireland2 | 
| Inverness Burghs | 31 August 18951 | Robert Finlay |  | Liberal Unionist | Robert Finlay |  | Liberal Unionist | Solicitor General2 | 
| 1 An uncontested by-election.2 Seat vacated on appointment to the office noted.
 | 
| 25th Parliament (1892–1895)[edit] | 
| By-election | Date | Incumbent | Party | Winner | Party | Position | 
| Ealing | 8 July 18951 | Lord George Hamilton |  | Conservative | Lord George Hamilton |  | Conservative | Secretary of State for India2 | 
| Sleaford | 6 July 18951 | Henry Chaplin |  | Conservative | Henry Chaplin |  | Conservative | President of the Local Government Board2 | 
| Blackpool | 6 July 18951 | Sir Matthew Ridley |  | Conservative | Sir Matthew Ridley |  | Conservative | Secretary of State for the Home Department2 | 
| Croydon | 5 July 18951 | Charles Ritchie |  | Conservative | Charles Ritchie |  | Conservative | President of the Board of Trade2 | 
| Manchester East | 1 July 18951 | Arthur Balfour |  | Conservative | Arthur Balfour |  | Conservative | First Lord of the Treasury2 | 
| Bristol West | 1 July 18951 | Sir Michael Hicks Beach |  | Conservative | Sir Michael Hicks Beach |  | Conservative | Chancellor of the Exchequer2 | 
| Birmingham West | 1 July 18951 | Joseph Chamberlain |  | Liberal Unionist | Joseph Chamberlain |  | Liberal Unionist | Secretary of State for the Colonies2 | 
| St George's Hanover Square | 29 June 18951 | George Goschen |  | Conservative | George Goschen |  | Conservative | First Lord of the Admiralty2 | 
| York | 14 November 18941 | Frank Lockwood |  | Liberal | Frank Lockwood |  | Liberal | Solicitor General for England and Wales2 | 
| Dumfries Burghs | 7 May 18941 | Robert Reid |  | Liberal | Robert Reid |  | Liberal | Solicitor General for England and Wales2 | 
| Wisbech | 3 April 1894 | Arthur Brand |  | Liberal | Arthur Brand |  | Liberal | Treasurer of the Household2 | 
| Hawick Burghs | 27 March 1894 | Thomas Shaw |  | Liberal | Thomas Shaw |  | Liberal | Solicitor General for Scotland2 | 
| Leith Burghs | 26 March 1894 | Ronald Munro-Ferguson |  | Liberal | Ronald Munro-Ferguson |  | Liberal | Lord Commissioner of the Treasury2 | 
| Leeds West | 16 March 18941 | Herbert Gladstone |  | Liberal | Herbert Gladstone |  | Liberal | First Commissioner of Works2 | 
| Accrington | 21 December 1893 | Joseph Leese |  | Liberal | Joseph Leese |  | Liberal | Recorder of Manchester2 | 
| Cardiganshire | 4 July 18931 | William Bowen Rowlands |  | Liberal | William Bowen Rowlands |  | Liberal | Recorder of Swansea2 | 
| Saffron Walden | 19 September 18921 | Herbert Gardner |  | Liberal | Herbert Gardner |  | Liberal | President of the Board of Agriculture2 | 
| Dundee | 9 September 18921 | Edmund Robertson |  | Liberal | Edmund Robertson |  | Liberal | Civil Lord of the Admiralty2 | 
| Merionethshire | 26 August 18921 | T. E. Ellis |  | Liberal | T. E. Ellis |  | Liberal | Lord Commissioner of the Treasury2 | 
| East Fife | 25 August 18921 | H. H. Asquith |  | Liberal | H. H. Asquith |  | Liberal | Secretary of State for the Home Department2 | 
| Clackmannanshire and Kinross-shire
 | 25 August 18921 | John Balfour |  | Liberal | John Balfour |  | Liberal | Lord Advocate2 | 
| Stirling Burghs | 25 August 18921 | Henry Campbell-Bannerman |  | Liberal | Henry Campbell-Bannerman |  | Liberal | Secretary of State for War2 | 
| Elgin Burghs | 25 August 18921 | Alexander Asher |  | Liberal | Alexander Asher |  | Liberal | Solicitor General for Scotland2 | 
| Newcastle-upon-Tyne | 25 August 1892 | John Morley |  | Liberal | John Morley |  | Liberal | Chief Secretary for Ireland2 | 
| Rotherham | 25 August 18921 | Arthur Dyke Acland |  | Liberal | Arthur Dyke Acland |  | Liberal | Vice President of the Committee of Council on Education2
 | 
| Forfarshire | 24 August 18921 | John Rigby |  | Liberal | John Rigby |  | Liberal | Solicitor General for England and Wales2 | 
| Midlothian (or Edinburghshire)
 | 24 August 18921 | William Ewart Gladstone |  | Liberal | William Ewart Gladstone |  | Liberal | Prime Minister, First Lord of the Treasury, Lord Privy Seal2 | 
| Glasgow Bridgeton | 24 August 18921 | Sir George Trevelyan |  | Liberal | Sir George Trevelyan |  | Liberal | Secretary for Scotland2 | 
| Mid Northamptonshire | 24 August 18921 | Charles Spencer |  | Liberal | Charles Spencer |  | Liberal | Vice-Chamberlain of the Household2 | 
| Nottingham East | 24 August 18921 | Arnold Morley |  | Liberal | Arnold Morley |  | Liberal | Postmaster General2 | 
| Derby | 24 August 1892 | Sir William Vernon Harcourt |  | Liberal | Sir William Vernon Harcourt |  | Liberal | Chancellor of the Exchequer2 | 
| Aberdeen South | 23 August 18921 | James Bryce |  | Liberal | James Bryce |  | Liberal | Chancellor of the Duchy of Lancaster2 | 
| St Austell | 23 August 18921 | William Alexander McArthur |  | Liberal | William Alexander McArthur |  | Liberal | Lord Commissioner of the Treasury2 | 
| Wolverhampton East | 23 August 18921 | Henry Fowler |  | Liberal | Henry Fowler |  | Liberal | President of the Local Government Board2 | 
| Stoke-upon-Trent | 23 August 18921 | George Leveson-Gower |  | Liberal | George Leveson-Gower |  | Liberal | Comptroller of the Household2 | 
| Sheffield Brightside | 23 August 18921 | A. J. Mundella |  | Liberal | A. J. Mundella |  | Liberal | President of the Board of Trade2 | 
| Bradford Central | 23 August 18921 | George Shaw-Lefevre |  | Liberal | George Shaw-Lefevre |  | Liberal | First Commissioner of Works2 | 
| Southwark West | 23 August 18921 | Richard Causton |  | Liberal | Richard Causton |  | Liberal | Lord Commissioner of the Treasury2 | 
| Hackney South | 23 August 18921 | Sir Charles Russell |  | Liberal | Sir Charles Russell |  | Liberal | Attorney General for England and Wales2 | 
| 1 An uncontested by-election.2 Seat vacated on appointment to the office noted.
 | 
| 24th Parliament (1886–1892)[edit] | 
| By-election | Date | Incumbent | Party | Winner | Party | Position | 
| Chichester | 9 December 18911 | Lord Walter Gordon-Lennox |  | Conservative | Lord Walter Gordon-Lennox |  | Conservative | Treasurer of the Household2 | 
| Leeds North | 23 November 18911 | William Jackson |  | Conservative | William Jackson |  | Conservative | Chief Secretary for Ireland2 | 
| Manchester North East | 8 October 1891 | Sir James Fergusson |  | Conservative | Sir James Fergusson |  | Conservative | Postmaster General2 | 
| Strand | 12 May 18911 | William Henry Smith |  | Conservative | William Henry Smith |  | Conservative | Lord Warden of the Cinque Ports2 | 
| Sleaford | 26 September 1889 | Henry Chaplin |  | Conservative | Henry Chaplin |  | Conservative | President of the Board of Agriculture2 | 
| Bristol West | 20 February 18881 | Sir Michael Hicks Beach |  | Conservative | Sir Michael Hicks Beach |  | Conservative | President of the Board of Trade2 | 
| Dublin University | 3 February 18881 | Dodgson Hamilton Madden |  | Irish Conservative | Dodgson Hamilton Madden |  | Irish Conservative | Solicitor General for Ireland2 | 
| Dartford | 2 February 18871 | Sir William Hart Dyke |  | Conservative | Sir William Hart Dyke |  | Conservative | Vice President of the Committee of Council on Education2
 | 
| North Northamptonshire | 16 August 18861 | Lord Burghley |  | Conservative | Lord Burghley |  | Conservative | Parliamentary Groom in Waiting2 | 
| Edinburgh and St Andrews Universities | 13 August 18861 | John Macdonald |  | Conservative | John Macdonald |  | Conservative | Lord Advocate2 | 
| Cambridge University | 13 August 18861 | Henry Cecil Raikes |  | Conservative | Henry Cecil Raikes |  | Conservative | Postmaster General2 | 
| Melton | 13 August 18861 | Lord John Manners |  | Conservative | Lord John Manners |  | Conservative | Chancellor of the Duchy of Lancaster2 | 
| Dublin University | 13 August 18861 | David Plunket |  | Irish Conservative | David Plunket |  | Irish Conservative | First Commissioner of Works2 | 
| Hugh Holmes |  | Irish Conservative | Hugh Holmes |  | Irish Conservative | Attorney General for Ireland2 | 
| West Down | 13 August 18861 | Lord Arthur Hill |  | Irish Conservative | Lord Arthur Hill |  | Irish Conservative | Comptroller of the Household2 | 
| Wigtownshire | 12 August 18861 | Sir Herbert Maxwell |  | Conservative | Sir Herbert Maxwell |  | Conservative | Lord Commissioner of the Treasury2 | 
| Buteshire | 12 August 18861 | James Robertson |  | Conservative | James Robertson |  | Conservative | Solicitor General for Scotland2 | 
| Enfield | 12 August 18861 | William Pleydell-Bouverie |  | Conservative | William Pleydell-Bouverie |  | Conservative | Treasurer of the Household2 | 
| Ealing | 12 August 18861 | Lord George Hamilton |  | Conservative | Lord George Hamilton |  | Conservative | First Lord of the Admiralty2 | 
| Horncastle | 12 August 18861 | Edward Stanhope |  | Conservative | Edward Stanhope |  | Conservative | Secretary of State for the Colonies2 | 
| Isle of Wight | 12 August 18861 | Sir Richard Webster |  | Conservative | Sir Richard Webster |  | Conservative | Attorney General for England and Wales2 | 
| Tiverton | 12 August 18861 | William Walrond |  | Conservative | William Walrond |  | Conservative | Lord Commissioner of the Treasury2 | 
| St George's, Tower Hamlets | 12 August 1886 | Charles Ritchie |  | Conservative | Charles Ritchie |  | Conservative | President of the Local Government Board2 | 
| Sheffield Ecclesall | 11 August 18861 | Ellis Ashmead-Bartlett |  | Conservative | Ellis Ashmead-Bartlett |  | Conservative | Civil Lord of the Admiralty2 | 
| Plymouth | 11 August 18861 | Edward Clarke |  | Conservative | Edward Clarke |  | Conservative | Solicitor General for England and Wales2 | 
| Manchester East | 11 August 18861 | Arthur Balfour |  | Conservative | Arthur Balfour |  | Conservative | Secretary for Scotland2 | 
| Liverpool Walton | 11 August 18861 | John George Gibson |  | Conservative | John George Gibson |  | Conservative | Solicitor General for Ireland2 | 
| Croydon | 11 August 18861 | Sidney Herbert |  | Conservative | Sidney Herbert |  | Conservative | Lord Commissioner of the Treasury2 | 
| Bristol West | 11 August 18861 | Sir Michael Hicks Beach |  | Conservative | Sir Michael Hicks Beach |  | Conservative | Chief Secretary for Ireland2 | 
| Brighton | 11 August 18861 | William Thackeray Marriott |  | Conservative | William Thackeray Marriott |  | Conservative | Judge Advocate General2 | 
| Birmingham East | 11 August 18861 | Henry Matthews |  | Conservative | Henry Matthews |  | Conservative | Secretary of State for the Home Department2 | 
| Strand | 11 August 18861 | William Henry Smith |  | Conservative | William Henry Smith |  | Conservative | Secretary of State for War2 | 
| Paddington South | 11 August 18861 | Lord Randolph Churchill |  | Conservative | Lord Randolph Churchill |  | Conservative | Chancellor of the Exchequer2 | 
| Marylebone East | 11 August 18861 | Lord Charles Beresford |  | Conservative | Lord Charles Beresford |  | Conservative | Junior Naval Lord2 | 
| Lewisham | 11 August 18861 | William Legge |  | Conservative | William Legge |  | Conservative | Vice-Chamberlain of the Household2 | 
| Hampstead | 11 August 18861 | Sir Henry Holland |  | Conservative | Sir Henry Holland |  | Conservative | Vice President of the Committee of Council on Education2
 | 
| 1 An uncontested by-election.2 Seat vacated on appointment to the office noted.
 | 
| 23rd Parliament (1885–1886)[edit] | 
| By-election | Date | Incumbent | Party | Winner | Party | Position | 
| Clitheroe | 19 April 1886[23 1] | Ughtred Kay-Shuttleworth |  | Liberal | Ughtred Kay-Shuttleworth |  | Liberal | Chancellor of the Duchy of Lancaster[23 2] | 
| Halifax | 3 April 1886[23 1] | Sir James Stansfeld |  | Liberal | Sir James Stansfeld |  | Liberal | President of the Local Government Board[23 2] | 
| Cardiff Boroughs | 27 February 1886 | Sir Edward James Reed |  | Liberal | Sir Edward James Reed |  | Liberal | Junior Lord of the Treasury[23 2] | 
| South Somerset | 24 February 1886[23 1] | Frederick Lambart |  | Liberal | Frederick Lambart |  | Liberal | Vice-Chamberlain of the Household[23 2] | 
| Grantham | 23 February 1886[23 1] | John William Mellor |  | Liberal | John William Mellor |  | Liberal | Judge Advocate General[23 2] | 
| Clackmannanshire and Kinross-shire | 13 February 1886[23 1] | John Balfour |  | Liberal | John Balfour |  | Liberal | Lord Advocate[23 2] | 
| Berwickshire | 13 February 1886[23 1] | Edward Marjoribanks |  | Liberal | Edward Marjoribanks |  | Liberal | Comptroller of the Household[23 2] | 
| Banffshire | 13 February 1886[23 1] | Robert Duff |  | Liberal | Robert Duff |  | Liberal | Civil Lord of the Admiralty[23 2] | 
| Luton | 13 February 1886[23 1] | Cyril Flower |  | Liberal | Cyril Flower |  | Liberal | Junior Lord of the Treasury[23 2] | 
| Great Grimsby | 13 February 1886 | Edward Heneage |  | Liberal | Edward Heneage |  | Liberal | Chancellor of the Duchy of Lancaster[23 2] | 
| Elgin Burghs | 12 February 1886[23 1] | Alexander Asher |  | Liberal | Alexander Asher |  | Liberal | Solicitor General for Scotland[23 2] | 
| North West Staffordshire | 12 February 1886[23 1] | George Leveson-Gower |  | Liberal | George Leveson-Gower |  | Liberal | Junior Lord of the Treasury[23 2] | 
| Mid Northamptonshire | 12 February 1886[23 1] | Charles Spencer |  | Liberal | Charles Spencer |  | Liberal | Parliamentary Groom in Waiting[23 2] | 
| Newcastle-upon-Tyne | 12 February 1886 | John Morley |  | Liberal | John Morley |  | Liberal | Chief Secretary for Ireland[23 2] | 
| Leeds South | 12 February 1886[23 1] | Sir Lyon Playfair |  | Liberal | Sir Lyon Playfair |  | Liberal | Vice President of the Committee of Council on Education[23 2]
 | 
| Hackney South | 11 February 1886 | Charles Russell |  | Liberal | Charles Russell |  | Liberal | Attorney General for England and Wales[23 2] | 
| Hawick Burghs | 10 February 1886[23 1] | George Trevelyan |  | Liberal | George Trevelyan |  | Liberal | Secretary for Scotland[23 2] | 
| Midlothian | 10 February 1886[23 1] | William Ewart Gladstone |  | Liberal | William Ewart Gladstone |  | Liberal | Prime Minister, First Lord of the Treasury, Lord Privy Seal[23 2] | 
| Stirling Burghs | 10 February 1886[23 1] | Henry Campbell-Bannerman |  | Liberal | Henry Campbell-Bannerman |  | Liberal | Secretary of State for War[23 2] | 
| Birmingham West | 9 February 1886[23 1] | Joseph Chamberlain |  | Liberal | Joseph Chamberlain |  | Liberal | President of the Local Government Board[23 2] | 
| Derby | 9 February 1886[23 1] | Sir William Vernon Harcourt |  | Liberal | Sir William Vernon Harcourt |  | Liberal | Chancellor of the Exchequer[23 2] | 
| Edinburgh South | 9 February 1886[23 1] | Hugh Childers |  | Liberal | Hugh Childers |  | Liberal | Secretary of State for the Home Department[23 2] | 
| Sheffield Brightside | 9 February 1886[23 1] | A. J. Mundella |  | Liberal | A. J. Mundella |  | Liberal | President of the Board of Trade[23 2] | 
| 22nd Parliament (1880–1885)[edit] | 
| By-election | Date | Former incumbent | Party | Winner | Party | Position | 
| Horsham | 16 July 1885[22 1] | Sir Henry Fletcher |  | Conservative | Sir Henry Fletcher |  | Conservative | Groom in Waiting[22 2] | 
| Chatham | 11 July 1885[22 1] | John Eldon Gorst |  | Conservative | Sir John Eldon Gorst |  | Conservative | Solicitor General for England and Wales[22 2] | 
| Brighton | 10 July 1885[22 1] | William Thackeray Marriott |  | Conservative | William Thackeray Marriott |  | Conservative | Judge Advocate General[22 2] | 
| Down | 8 July 1885 | Lord Arthur Hill |  | Conservative | Lord Arthur Hill |  | Conservative | Comptroller of the Household[22 2] | 
| West Kent | 6 July 1885[22 1] | William Legge |  | Conservative | William Legge |  | Conservative | Vice-Chamberlain of the Household[22 2] | 
| East Devon | 4 July 1885[22 1] | William Walrond |  | Conservative | William Walrond |  | Conservative | Lord Commissioner of the Treasury[22 2] | 
| Bute | 3 July 1885[22 1] | Charles Dalrymple |  | Conservative | Charles Dalrymple |  | Conservative | Lord Commissioner of the Treasury[22 2] | 
| South Wiltshire | 3 July 1885[22 1] | William Pleydell-Bouverie |  | Conservative | William Pleydell-Bouverie |  | Conservative | Treasurer of the Household[22 2] | 
| Middlesex | 3 July 1885[22 1] | Lord George Hamilton |  | Conservative | Lord George Hamilton |  | Conservative | First Lord of the Admiralty[22 2] | 
| Woodstock | 3 July 1885 | Lord Randolph Churchill |  | Conservative | Lord Randolph Churchill |  | Conservative | Secretary of State for India[22 2] | 
| North Leicestershire | 2 July 1885[22 1] | Lord John Manners |  | Conservative | Lord John Manners |  | Conservative | Postmaster General[22 2] | 
| North Lancashire | 2 July 1885[22 1] | Frederick Stanley |  | Conservative | Frederick Stanley |  | Conservative | Secretary of State for the Colonies[22 2] | 
| Mid Kent | 2 July 1885[22 1] | Sir William Hart Dyke |  | Conservative | Sir William Hart Dyke |  | Conservative | Chief Secretary for Ireland[22 2] | 
| Wilton | 2 July 1885[22 1] | Sidney Herbert |  | Conservative | Sidney Herbert |  | Conservative | Lord Commissioner of the Treasury[22 2] | 
| Dublin University | 1 July 1885[22 1] | David Plunket |  | Conservative | David Plunket |  | Conservative | First Commissioner of Works[22 2] | 
| Mid Lincolnshire | 1 July 1885[22 1] | Henry Chaplin |  | Conservative | Henry Chaplin |  | Conservative | Chancellor of the Duchy of Lancaster[22 2] | 
| Edward Stanhope |  | Conservative | Edward Stanhope |  | Conservative | President of the Board of Trade[22 2] | 
| South West Lancashire | 1 July 1885[22 1] | R. A. Cross |  | Conservative | R. A. Cross |  | Conservative | Home Secretary[22 2] | 
| East Gloucestershire | 1 July 1885[22 1] | Sir Michael Hicks-Beach |  | Conservative | Sir Michael Hicks-Beach |  | Conservative | Chancellor of the Exchequer[22 2] | 
| Eye | 1 July 1885 | Ellis Ashmead-Bartlett |  | Conservative | Ellis Ashmead-Bartlett |  | Conservative | Civil Lord of the Admiralty[22 2] | 
| Hertford | 30 June 1885[22 1] | Arthur Balfour |  | Conservative | Arthur Balfour |  | Conservative | President of the Local Government Board[22 2] | 
| Westminster | 29 June 1885[22 1] | William Henry Smith |  | Conservative | William Henry Smith |  | Conservative | Secretary of State for War[22 2] | 
| Scarborough | 26 November 1884 | William Sproston Caine |  | Liberal | William Sproston Caine |  | Liberal | Civil Lord of the Admiralty[22 2] | 
| Stirling Burghs | 31 October 1884[22 1] | Henry Campbell-Bannerman |  | Liberal | Henry Campbell-Bannerman |  | Liberal | Chief Secretary for Ireland[22 2] | 
| Chelsea | 11 January 1883[22 1] | Sir Charles Dilke |  | Liberal | Sir Charles Dilke |  | Liberal | President of the Local Government Board[22 2] | 
| Salisbury | 20 November 1882[22 3] | William Grenfell |  | Liberal | Coleridge Kennard |  | Conservative | Groom in Waiting[22 2] | 
| Banffshire | 19 June 1882[22 1] | Robert Duff |  | Liberal | Robert Duff |  | Liberal | Lord Commissioner of the Treasury[22 2] | 
| Hawick Burghs | 18 May 1882[22 1] | George Trevelyan |  | Liberal | George Trevelyan |  | Liberal | Chief Secretary for Ireland[22 2] | 
| Northern West Riding of Yorkshire | 18 May 1882 | Lord Frederick Cavendish |  | Liberal | Isaac Holden |  | Liberal | Chief Secretary for Ireland[22 2][22 4] | 
| Elgin Burghs | 27 August 1881[22 1] | Alexander Asher |  | Liberal | Alexander Asher |  | Liberal | Solicitor General for Scotland[22 2] | 
| Leeds | 24 August 1881[22 1] | Herbert Gladstone |  | Liberal | Herbert Gladstone |  | Liberal | Lord Commissioner of the Treasury[22 2] | 
| Reading | 15 December 1880[22 1] | George Shaw-Lefevre |  | Liberal | George Shaw-Lefevre |  | Liberal | First Commissioner of Works and Public Buildings[22 2] | 
| Wycombe | 26 May 1880[22 1] | William Carington |  | Liberal | William Carington |  | Liberal | Groom in Waiting[22 2] | 
| Londonderry County | 21 May 1880[22 1] | Hugh Law |  | Liberal | Hugh Law |  | Liberal | Attorney General for Ireland[22 2] | 
| Wigtown Burghs | 18 May 1880[22 5] | John McLaren |  | Liberal | Mark Stewart |  | Conservative | Lord Advocate[22 2] | 
| Mallow | 17 May 1880 | William Moore Johnson |  | Liberal | William Moore Johnson |  | Liberal | Solicitor General for Ireland[22 2] | 
| North East Lancashire | 17 May 1880[22 1] | Spencer Cavendish |  | Liberal | Spencer Cavendish |  | Liberal | Secretary of State for India[22 2] | 
| Clackmannanshire and Kinross-shire | 14 May 1880[22 1] | William Patrick Adam |  | Liberal | William Patrick Adam |  | Liberal | First Commissioner of Works[22 2] | 
| Denbighshire | 14 May 1880[22 1] | George Osborne Morgan |  | Liberal | George Osborne Morgan |  | Liberal | Judge Advocate General[22 2] | 
| Haverfordwest Boroughs | 12 May 1880[22 1] | William Edwardes |  | Liberal | William Edwardes |  | Liberal | Comptroller of the Household[22 2] | 
| Midlothian | 10 May 1880[22 1] | William Ewart Gladstone |  | Liberal | William Ewart Gladstone |  | Liberal | Prime Minister, First Lord of the Treasury and Chancellor of the Exchequer[22 2] | 
| Shrewsbury | 10 May 1880[22 1] | Charles Cecil Cotes |  | Liberal | Charles Cecil Cotes |  | Liberal | Lord Commissioner of the Treasury[22 2] | 
| Hastings | 10 May 1880[22 1] | Thomas Brassey |  | Liberal | Thomas Brassey |  | Liberal | Civil Lord of the Admiralty[22 2] | 
| Durham City | 10 May 1880[22 1] | Farrer Herschell |  | Liberal | Farrer Herschell |  | Liberal | Solicitor General for England and Wales[22 2] | 
| Taunton | 8 May 1880[22 1] | Sir Henry James |  | Liberal | Sir Henry James |  | Liberal | Attorney General for England and Wales[22 2] | 
| Sheffield | 8 May 1880[22 1] | A. J. Mundella |  | Liberal | A. J. Mundella |  | Liberal | Vice-President of the Committee of the Council on Education[22 2] | 
| Pontefract | 8 May 1880[22 1] | Hugh Childers |  | Liberal | Hugh Childers |  | Liberal | Secretary of State for War[22 2] | 
| Oxford | 8 May 1880[22 6] | William Vernon Harcourt |  | Liberal | Alexander William Hall |  | Conservative | Home Secretary[22 2] | 
| Marlborough | 8 May 1880[22 1] | Lord Charles Bruce |  | Liberal | Lord Charles Bruce |  | Liberal | Vice-Chamberlain of the Household[22 2] | 
| Chester | 8 May 1880[22 1][22 6] | John George Dodson |  | Liberal | John George Dodson |  | Liberal | President of the Local Government Board[22 2] | 
| Bradford | 8 May 1880[22 1] | William Edward Forster |  | Liberal | William Edward Forster |  | Liberal | Chief Secretary for Ireland[22 2] | 
| Birmingham | 8 May 1880[22 1] | John Bright |  | Liberal | John Bright |  | Liberal | Chancellor of the Duchy of Lancaster[22 2] | 
| Joseph Chamberlain |  | Liberal | Joseph Chamberlain |  | Liberal | President of the Board of Trade[22 2] | 
| Bath | 8 May 1880[22 1] | Sir Arthur Hayter |  | Liberal | Sir Arthur Hayter |  | Liberal | Lord Commissioner of the Treasury[22 2] | 
| Hackney | 7 May 1880[22 1] | Henry Fawcett |  | Liberal | Henry Fawcett |  | Liberal | Postmaster General[22 2] | 
| John Holms |  | Liberal | John Holms |  | Liberal | Lord Commissioner of the Treasury[22 2] | 
| 21st Parliament (1874–1880)[edit] | 
| By-election | Date | Former incumbent | Party | Winner | Party | Position | 
| South Warwickshire | 21 February 1879[21 1] | Hugh Seymour |  | Conservative | Hugh Seymour |  | Conservative | Comptroller of the Household[21 2] | 
| Middlesex | 12 April 1878[21 1] | Lord George Hamilton |  | Conservative | Lord George Hamilton |  | Conservative | Vice-President of the Committee of the Council on Education[21 2] | 
| North Lancashire | 8 April 1878[21 1] | Frederick Stanley |  | Conservative | Frederick Stanley |  | Conservative | Secretary of State for War[21 2] | 
| York | 20 February 1878[21 1] | James Lowther |  | Conservative | James Lowther |  | Conservative | Chief Secretary for Ireland[21 2] | 
| Westminster | 11 August 1877[21 1] | William Henry Smith |  | Conservative | William Henry Smith |  | Conservative | First Lord of the Admiralty[21 2] | 
| Dublin University | 13 February 1877[21 1] | Edward Gibson |  | Conservative | Edward Gibson |  | Conservative | Attorney-General for Ireland[21 2] | 
| Rutlandshire | 17 August 1876[21 1] | Gerard Noel |  | Conservative | Gerard Noel |  | Conservative | First Commissioner of Works[21 2] | 
| Enniskillen | 15 February 1876[21 1] | John Crichton |  | Conservative | John Crichton |  | Conservative | Lord Commissioner of the Treasury[21 2] | 
| South Wiltshire | 4 January 1876[21 1] | Lord Henry Thynne |  | Conservative | Lord Henry Thynne |  | Conservative | Treasurer of the Household[21 2] | 
| Whitehaven | 16 December 1875 | George Cavendish-Bentinck |  | Conservative | George Cavendish-Bentinck |  | Conservative | Judge Advocate General[21 2] | 
| Dublin University | 11 February 1875[21 1] | David Robert Plunket |  | Conservative | David Robert Plunket |  | Conservative | Solicitor General for Ireland[21 2] | 
| Preston | 24 April 1874[21 1] | John Holker |  | Conservative | John Holker |  | Conservative | Solicitor General for England and Wales[21 2] | 
| Falkirk Burghs | 26 March 1874[21 1] | John Ramsay |  | Liberal | John Ramsay |  | Liberal | Disqualification (Held Government Contract) | 
| North Staffordshire | 23 March 1874[21 1] | Charles Adderley |  | Conservative | Charles Adderley |  | Conservative | President of the Board of Trade[21 2] | 
| East Suffolk | 20 March 1874[21 1] | The Lord Rendlesham |  | Conservative | The Lord Rendlesham |  | Conservative | Lord Commissioner of the Treasury[21 2] | 
| North Leicestershire | 20 March 1874[21 1] | Lord John Manners |  | Conservative | Lord John Manners |  | Conservative | Postmaster General[21 2] | 
| Invernesshire | 19 March 1874[21 1] | Donald Cameron |  | Conservative | Donald Cameron |  | Conservative | Parliamentary Groom in Waiting[21 2] | 
| South West Lancashire | 19 March 1874[21 1] | R. A. Cross |  | Conservative | R. A. Cross |  | Conservative | Home Secretary[21 2] | 
| South Devonshire | 19 March 1874[21 1] | Sir Massey Lopes |  | Conservative | Sir Massey Lopes |  | Conservative | Civil Lord of the Admiralty[21 2] | 
| County Dublin | 18 March 1874 | Thomas Edward Taylor |  | Conservative | Thomas Edward Taylor |  | Conservative | Chancellor of the Duchy of Lancaster[21 2] | 
| North Devonshire | 18 March 1874[21 1] | Sir Stafford Northcote |  | Conservative | Sir Stafford Northcote |  | Conservative | Chancellor of the Exchequer[21 2] | 
| North Northamptonshire | 18 March 1874[21 1] | George Ward Hunt |  | Conservative | George Ward Hunt |  | Conservative | First Lord of the Admiralty[21 2] | 
| North Northumberland | 17 March 1874[21 1] | Earl Percy |  | Conservative | Earl Percy |  | Conservative | Treasurer of the Household[21 2] | 
| Monmouthshire | 17 March 1874[21 1] | Lord Henry Somerset |  | Conservative | Lord Henry Somerset |  | Conservative | Comptroller of the Household[21 2] | 
| East Gloucestershire | 17 March 1874[21 1] | Michael Hicks Beach |  | Conservative | Michael Hicks Beach |  | Conservative | Chief Secretary for Ireland[21 2] | 
| Buckinghamshire | 17 March 1874[21 1] | Benjamin Disraeli |  | Conservative | Benjamin Disraeli |  | Conservative | Prime Minister and First Lord of the Treasury[21 2] | 
| Eye | 17 March 1874 | George Barrington |  | Conservative | George Barrington |  | Conservative | Vice-Chamberlain of the Household[21 2] | 
| Dublin University | 16 March 1874[21 1] | John Thomas Ball |  | Conservative | John Thomas Ball |  | Conservative | Attorney General for Ireland[21 2] | 
| Mid Surrey | 16 March 1874[21 1] | Richard Baggallay |  | Conservative | Richard Baggallay |  | Conservative | Solicitor General for England and Wales[21 2] | 
| Portsmouth | 16 March 1874[21 1] | James Dalrymple-Horn-Elphinstone |  | Conservative | James Dalrymple-Horn-Elphinstone |  | Conservative | Lord Commissioner of the Treasury[21 2] | 
| North Lincolnshire | 16 March 1874[21 1] | Rowland Winn |  | Conservative | Rowland Winn |  | Conservative | Lord Commissioner of the Treasury[21 2] | 
| Huntingdon | 16 March 1874[21 1] | John Burgess Karslake |  | Conservative | John Burgess Karslake |  | Conservative | Attorney General for England and Wales[21 2] | 
| Glasgow and Aberdeen Universities | 14 March 1874[21 1] | Edward Gordon |  | Conservative | Edward Gordon |  | Conservative | Lord Advocate[21 2] | 
| North Hampshire | 14 March 1874[21 1] | George Sclater-Booth |  | Conservative | George Sclater-Booth |  | Conservative | President of the Local Government Board[21 2] | 
| Liverpool | 14 March 1874[21 1] | Dudley Ryder |  | Conservative | Dudley Ryder |  | Conservative | Vice-President of the Committee of the Council on Education[21 2] | 
| Oxford University | 14 March 1874[21 1] | Gathorne Hardy |  | Conservative | Gathorne Hardy |  | Conservative | Secretary of State for War[21 2] | 
| New Shoreham | 13 March 1874[21 1] | Stephen Cave |  | Conservative | Stephen Cave |  | Conservative | Judge Advocate General[21 2] | 
| Chichester | 13 March 1874[21 1] | Lord Henry Lennox |  | Conservative | Lord Henry Lennox |  | Conservative | First Commissioner of Works[21 2] | 
| 20th Parliament (1868–1874)[edit] | 
| By-election | Date | Former incumbent | Party | Winner | Party | Position | 
| Oxford | 6 December 1873[20 1] | William Vernon Harcourt |  | Liberal | William Vernon Harcourt |  | Liberal | Solicitor General for England and Wales[20 2] | 
| Edinburgh and St. Andrews Universities | 4 December 1873[20 1] | Lyon Playfair |  | Liberal | Lyon Playfair |  | Liberal | Postmaster General[20 2] | 
| Haverfordwest Boroughs | 24 November 1873 | William Edwardes |  | Liberal | William Edwardes |  | Liberal | Parliamentary Groom in Waiting[20 2] | 
| Birmingham | 20 October 1873[20 1] | John Bright |  | Liberal | John Bright |  | Liberal | Chancellor of the Duchy of Lancaster[20 2] | 
| Taunton | 13 October 1873 | Henry James |  | Liberal | Henry James |  | Liberal | Solicitor General for England and Wales[20 2] | 
| Northern West Riding of Yorkshire | 27 August 1873[20 1] | Lord Frederick Cavendish |  | Liberal | Lord Frederick Cavendish |  | Liberal | Lord Commissioner of the Treasury[20 2] | 
| Pontefract | 15 August 1872[20 3] | Hugh Childers |  | Liberal | Hugh Childers |  | Liberal | Chancellor of the Duchy of Lancaster and Paymaster General[20 2] | 
| Flintshire | 2 March 1872[20 1] | Lord Richard Grosvenor |  | Liberal | Lord Richard Grosvenor |  | Liberal | Vice-Chamberlain of the Household[20 2] | 
| Dover | 25 November 1871 | George Jessel |  | Liberal | George Jessel |  | Liberal | Solicitor General for England and Wales[20 2] | 
| Halifax | 13 March 1871[20 1] | James Stansfeld |  | Liberal | James Stansfeld |  | Liberal | President of the Poor Law Board[20 2] | 
| County Limerick | 28 January 1871[20 1] | William Monsell |  | Liberal | William Monsell |  | Liberal | Postmaster General[20 2] | 
| Durham City | 14 January 1871[20 1] | John Robert Davison |  | Liberal | John Robert Davison |  | Liberal | Judge Advocate General[20 2] | 
| Plymouth | 15 August 1870[20 1] | Sir Robert Collier |  | Liberal | Sir Robert Collier |  | Liberal | Recorder of Bristol[20 2] | 
| Londonderry City | 15 February 1870 | Richard Dowse |  | Liberal | Richard Dowse |  | Liberal | Solicitor General for Ireland[20 2] | 
| Whitby | 18 November 1869 | William Henry Gladstone |  | Liberal | William Henry Gladstone |  | Liberal | Lord Commissioner of the Treasury[20 2] | 
| Tower Hamlets | 8 November 1869[20 1] | Acton Smee Ayrton |  | Liberal | Acton Smee Ayrton |  | Liberal | First Commissioner of Works and Public Buildings[20 2] | 
| County Louth | 11 January 1869[20 1] | Chichester Fortescue |  | Liberal | Chichester Fortescue |  | Liberal | Chief Secretary for Ireland[20 2] | 
| Kildare | 11 January 1869[20 1] | Lord Otho Fitzgerald |  | Liberal | Lord Otho Fitzgerald |  | Liberal | Comptroller of the Household[20 2] | 
| Westmeath | 7 January 1869[20 1] | Algernon Greville |  | Liberal | Algernon Greville |  | Liberal | Parliamentary Groom in Waiting[20 2] | 
| Kerry | 7 January 1869[20 1] | Valentine Browne |  | Liberal | Valentine Browne |  | Liberal | Vice-Chamberlain of the Household[20 2] | 
| Clackmannanshire and Kinross-shire
 | 6 January 1869[20 1] | William Patrick Adam |  | Liberal | William Patrick Adam |  | Liberal | Lord Commissioner of the Treasury[20 2] | 
| Clare | 5 January 1869[20 1] | Sir Colman O'Loghlen |  | Liberal | Sir Colman O'Loghlen |  | Liberal | Judge Advocate General[20 2] | 
| Mallow | 4 January 1869[20 1] | Edward Sullivan |  | Liberal | Edward Sullivan |  | Liberal | Attorney General for Ireland[20 2] | 
| Wigtown Burghs | 4 January 1869[20 1] | George Young |  | Liberal | George Young |  | Liberal | Solicitor General for Scotland[20 2] | 
| Hawick Burghs | 4 January 1869[20 1] | George Trevelyan |  | Liberal | George Trevelyan |  | Liberal | Civil Lord of the Admiralty[20 2] | 
| Oxford | 22 December 1868[20 1] | Edward Cardwell |  | Liberal | Edward Cardwell |  | Liberal | Secretary of State for War[20 2] | 
| London University | 21 December 1868[20 1] | Robert Lowe |  | Liberal | Robert Lowe |  | Liberal | Chancellor of the Exchequer[20 2] | 
| Truro | 21 December 1868[20 1] | John Cranch Walker Vivian |  | Liberal | John Cranch Walker Vivian |  | Liberal | Lord Commissioner of the Treasury[20 2] | 
| Ripon | 21 December 1868[20 1] | Lord John Hay |  | Liberal | Lord John Hay |  | Liberal | Junior Naval Lord[20 2] | 
| Pontefract | 21 December 1868[20 1] | Hugh Childers |  | Liberal | Hugh Childers |  | Liberal | First Lord of the Admiralty[20 2] | 
| Plymouth | 21 December 1868[20 1] | Sir Robert Collier |  | Liberal | Sir Robert Collier |  | Liberal | Attorney General for England and Wales[20 2] | 
| Halifax | 21 December 1868[20 1] | James Stansfeld |  | Liberal | James Stansfeld |  | Liberal | Lord Commissioner of the Treasury[20 2] | 
| Exeter | 21 December 1868[20 1] | John Coleridge |  | Liberal | Sir John Coleridge |  | Liberal | Solicitor General for England and Wales[20 2] | 
| Bradford | 21 December 1868[20 1] | William Edward Forster |  | Liberal | William Edward Forster |  | Liberal | Vice President of the Committee of Council on Education[20 2] | 
| Birmingham | 21 December 1868[20 1] | John Bright |  | Liberal | John Bright |  | Liberal | President of the Board of Trade[20 2] | 
| Southwark | 21 December 1868[20 1] | Austen Henry Layard |  | Liberal | Austen Henry Layard |  | Liberal | First Commissioner of Works[20 2] | 
| Greenwich | 21 December 1868[20 1] | William Ewart Gladstone |  | Liberal | William Ewart Gladstone |  | Liberal | Prime Minister and First Lord of the Treasury[20 2] | 
| City of London | 21 December 1868[20 1] | George Goschen |  | Liberal | George Goschen |  | Liberal | President of the Poor Law Board[20 2] | 
| 19th Parliament (1865–1868)[edit] | 
| By-election | Date | Former incumbent | Party | Winner | Party | Position | 
| North Northamptonshire | 7 March 1868[19 1] | George Ward Hunt |  | Conservative | George Ward Hunt |  | Conservative | Chancellor of the Exchequer[19 2] | 
| Helston | 19 February 1868[19 1] | William Brett |  | Conservative | William Brett |  | Conservative | Solicitor General for England and Wales[19 2] | 
| Andover | 22 July 1867[19 1] | John Burgess Karslake |  | Conservative | John Burgess Karslake |  | Conservative | Attorney General for England and Wales[19 2] | 
| Cambridge University | 22 July 1867[19 1] | Charles Jasper Selwyn |  | Conservative | Charles Jasper Selwyn |  | Conservative | Solicitor General for England and Wales[19 2] | 
| North Lancashire | 1 July 1867[19 1] | John Wilson-Patten |  | Conservative | John Wilson-Patten |  | Conservative | Chancellor of the Duchy of Lancaster[19 2] | 
| Oxford University | 20 May 1867[19 1] | Gathorne Hardy |  | Conservative | Gathorne Hardy |  | Conservative | Home Secretary[19 2] | 
| Dublin University | 30 March 1867[19 1] | Hedges Eyre Chatterton |  | Conservative | Hedges Eyre Chatterton |  | Conservative | Attorney-General for Ireland[19 2] | 
| Huntingdonshire | 25 March 1867[19 1] | Lord Robert Montagu |  | Conservative | Lord Robert Montagu |  | Conservative | Vice-President of the Committee on Education[19 2] | 
| Tyrone | 21 March 1867[19 1] | Henry Lowry-Corry |  | Conservative | Henry Lowry-Corry |  | Conservative | First Lord of the Admiralty[19 2] | 
| North Devon | 18 March 1867[19 1] | Stafford Northcote |  | Conservative | Stafford Northcote |  | Conservative | Secretary of State for India[19 2] | 
| Droitwich | 13 March 1867[19 1] | John Pakington |  | Conservative | John Pakington |  | Conservative | Secretary of State for War[19 2] | 
| South Shropshire | 8 March 1867[19 1] | Percy Egerton Herbert |  | Conservative | Percy Egerton Herbert |  | Conservative | Treasurer of the Household[19 2] | 
| Galway Borough | 12 February 1867[19 1] | Michael Morris |  | Conservative | Michael Morris |  | Conservative | Attorney General for Ireland[19 2] | 
| West Gloucestershire | 15 November 1866[19 1] | John Rolt |  | Conservative | John Rolt |  | Conservative | Attorney General for England and Wales[19 2] | 
| Abingdon | 6 August 1866[19 1] | Charles Lindsay |  | Conservative | Charles Lindsay |  | Conservative | Groom in Waiting[19 2] | 
| Galway Borough | 2 August 1866 | Michael Morris |  | Liberal | Michael Morris |  | Conservative | Solicitor General for Ireland[19 2] | 
| Peeblesshire | 24 July 1866[19 1] | Graham Graham-Montgomery |  | Conservative | Graham Graham-Montgomery |  | Conservative | Lord Commissioner of the Treasury[19 2] | 
| Bridgnorth | 21 July 1866[19 1] | Henry Whitmore |  | Conservative | Henry Whitmore |  | Conservative | Lord Commissioner of the Treasury[19 2] | 
| Tyrone | 20 July 1866[19 1] | Lord Claud Hamilton |  | Conservative | Lord Claud Hamilton |  | Conservative | Vice-Chamberlain of the Household[19 2] | 
| Tyrone | 18 July 1866[19 1] | Henry Lowry-Corry |  | Conservative | Henry Lowry-Corry |  | Conservative | Vice-President of the Committee of the Council on Education[19 2] | 
| Cambridgeshire | 17 July 1866[19 1] | Viscount Royston |  | Conservative | Viscount Royston |  | Conservative | Comptroller of the Household[19 2] | 
| Antrim | 17 July 1866[19 1] | George Henry Seymour |  | Conservative | George Henry Seymour |  | Conservative | Third Naval Lord[19 2] | 
| North Essex | 16 July 1866[19 1] | Charles Du Cane |  | Conservative | Charles Du Cane |  | Conservative | Civil Lord of the Admiralty[19 2] | 
| Rutlandshire | 14 July 1866[19 1] | Gerard Noel |  | Conservative | Gerard Noel |  | Conservative | Lord Commissioner of the Treasury[19 2] | 
| North Northamptonshire | 14 July 1866[19 1] | William Cecil |  | Conservative | William Cecil |  | Conservative | Treasurer of the Household[19 2] | 
| North Leicestershire | 14 July 1866[19 1] | Lord John Manners |  | Conservative | Lord John Manners |  | Conservative | First Commissioner of Works[19 2] | 
| North Devon | 14 July 1866[19 1] | Stafford Northcote |  | Conservative | Stafford Northcote |  | Conservative | President of the Board of Trade[19 2] | 
| New Shoreham | 14 July 1866[19 1] | Stephen Cave |  | Conservative | Stephen Cave |  | Conservative | Paymaster General and Vice-President of the Board of Trade[19 2] | 
| Belfast | 13 July 1866[19 1] | Hugh Cairns |  | Conservative | Hugh Cairns |  | Conservative | Attorney General for England and Wales[19 2] | 
| Buckinghamshire | 13 July 1866[19 1] | Benjamin Disraeli |  | Conservative | Benjamin Disraeli |  | Conservative | Chancellor of the Exchequer[19 2] | 
| Oxford University | 12 July 1866[19 1] | Gathorne Hardy |  | Conservative | Gathorne Hardy |  | Conservative | President of the Poor Law Board[19 2] | 
| Stamford | 12 July 1866[19 1] | Robert Cecil |  | Conservative | Robert Cecil |  | Conservative | Secretary of State for India[19 2] | 
| Sir John Dalrymple-Hay |  | Conservative | Sir John Dalrymple-Hay |  | Conservative | Fourth Naval Lord[19 2] | 
| Bridgewater | 12 July 1866 | George Patton |  | Conservative | Philip Vanderbyl |  | Liberal | Lord Advocate[19 2] | 
| Cambridge University | 11 July 1866[19 1] | Spencer Horatio Walpole |  | Conservative | Spencer Horatio Walpole |  | Conservative | Home Secretary[19 2] | 
| King's Lynn | 11 July 1866[19 1] | Lord Stanley |  | Conservative | Lord Stanley |  | Conservative | Foreign Secretary[19 2] | 
| Huntingdon | 11 July 1866[19 1] | Jonathan Peel |  | Conservative | Jonathan Peel |  | Conservative | Secretary of State for War[19 2] | 
| Guildford | 11 July 1866 | William Bovill |  | Conservative | William Bovill |  | Conservative | Solicitor General for England and Wales[19 2] | 
| Durham | 11 July 1866[19 1] | John Mowbray |  | Conservative | John Mowbray |  | Conservative | Judge Advocate General[19 2] | 
| Droitwich | 11 July 1866[19 1] | John Pakington |  | Conservative | John Pakington |  | Conservative | First Lord of the Admiralty[19 2] | 
| Cockermouth | 11 July 1866[19 1] | Lord Naas |  | Conservative | Lord Naas |  | Conservative | Chief Secretary for Ireland[19 2] | 
| County Waterford | 7 June 1866[19 1] | John Esmonde |  | Liberal | John Esmonde |  | Liberal | Lord Commissioner of the Treasury[19 2] | 
| Winchester | 4 June 1866 | John Bonham-Carter |  | Liberal | John Bonham-Carter |  | Liberal | Lord Commissioner of the Treasury[19 2] | 
| Kildare | 21 May 1866[19 1] | Lord Otho FitzGerald |  | Liberal | Lord Otho FitzGerald |  | Liberal | Treasurer of the Household[19 2] | 
| Reading | 5 May 1866[19 1] | George Shaw-Lefevre |  | Liberal | George Shaw-Lefevre |  | Liberal | Civil Lord of the Admiralty[19 2] | 
| Ripon | 28 March 1866[19 1] | Lord John Hay |  | Liberal | Lord John Hay |  | Liberal | Fifth Naval Lord[19 2] | 
| County Louth | 22 March 1866[19 1] | Chichester Parkinson-Fortescue |  | Liberal | Chichester Parkinson-Fortescue |  | Liberal | Chief Secretary for Ireland[19 2] | 
| County Limerick | 1 March 1866[19 1] | William Monsell |  | Liberal | William Monsell |  | Liberal | Vice-President of the Board of Trade and Paymaster General[19 2] | 
| North Lancashire | 28 February 1866[19 1] | Spender Cavendish |  | Liberal | Spender Cavendish |  | Liberal | Secretary of State for War[19 2] | 
| Sunderland | 28 February 1866 | Henry Fenwick |  | Liberal | John Candlish |  | Liberal | Civil Lord of the Admiralty[19 2] | 
| City of London | 26 February 1866[19 1] | George Goschen |  | Liberal | George Goschen |  | Liberal | Chancellor of the Duchy of Lancaster[19 2] | 
| 18th Parliament (1859–1865)[edit] | 
| By-election | Date | Former incumbent | Party | Winner | Party | Position | 
| Clackmannanshire and Kinross-shire | 20 April 1865[18 1] | William Patrick Adam |  | Liberal | William Patrick Adam |  | Liberal | Lord of the Treasury[18 2] | 
| Gloucester | 25 May 1864[18 1] | John Joseph Powell |  | Liberal | John Joseph Powell |  | Liberal | Recorder of Wolverhampton[18 2] | 
| Merthyr Tydfil | 25 April 1864[18 1] | Henry Bruce |  | Liberal | Henry Bruce |  | Liberal | Vice-President of the Committee on Education[18 2] | 
| Pontefract | 20 April 1864[18 1] | Hugh Childers |  | Liberal | Hugh Childers |  | Liberal | Civil Lord of the Admiralty[18 2] | 
| Oxford | 9 April 1864[18 1] | Edward Cardwell |  | Liberal | Edward Cardwell |  | Liberal | Secretary of State for the Colonies[18 2] | 
| Richmond | 17 October 1863[18 1] | Roundell Palmer |  | Liberal | Roundell Palmer |  | Liberal | Attorney General for England and Wales[18 2] | 
| Plymouth | 17 October 1863[18 1] | Robert Collier |  | Liberal | Robert Collier |  | Liberal | Solicitor General for England and Wales[18 2] | 
| Halifax | 28 April 1863[18 1] | James Stansfeld |  | Liberal | James Stansfeld |  | Liberal | Civil Lord of the Admiralty[18 2] | 
| North Lancashire | 24 March 1863[18 1] | Spencer Cavendish |  | Liberal | Spencer Cavendish |  | Liberal | Civil Lord of the Admiralty[18 2] | 
| Longford | 7 March 1862 | Luke White |  | Liberal | Myles William O'Reilly |  | Liberal | Lord of the Treasury[18 2] | 
| Tamworth | 31 July 1861[18 1] | Robert Peel |  | Liberal | Robert Peel |  | Liberal | Chief Secretary for Ireland[18 2] | 
| Morpeth | 31 July 1861[18 1] | George Grey |  | Liberal | George Grey |  | Liberal | Home Secretary[18 2] | 
| Oxford | 30 July 1861[18 1] | Edward Cardwell |  | Liberal | Edward Cardwell |  | Liberal | Chancellor of the Duchy of Lancaster[18 2] | 
| Durham City | 8 July 1861[18 1] | William Atherton |  | Liberal | William Atherton |  | Liberal | Attorney General for England and Wales[18 2] | 
| Southwark | 24 April 1861[18 1] | John Locke |  | Liberal | John Locke |  | Liberal | Recorder of Brighton[18 2] | 
| Tiverton | 28 March 1861[18 1] | Henry John Temple |  | Liberal | Henry John Temple |  | Liberal | Lord Warden of the Cinque Ports[18 2] | 
| County Cork | 5 March 1860 | Rickard Deasy |  | Liberal | Rickard Deasy |  | Liberal | Attorney General for Ireland[18 2] | 
| Hertford | 13 February 1860[18 1] | William Cowper |  | Liberal | William Cowper |  | Liberal | First Commissioner of Works[18 2] | 
| Gateshead | 13 February 1860[18 1] | William Hutt |  | Liberal | William Hutt |  | Liberal | Vice-President of the Board of Trade and Paymaster General[18 2] | 
| Liskeard | 9 January 1860[18 1] | William Atherton |  | Liberal | William Atherton |  | Liberal | Solicitor General for England and Wales[18 2] | 
| Hertford | 18 August 1859 | William Cowper |  | Liberal | William Cowper |  | Liberal | Vice-President of the Board of Trade and Paymaster General[18 2] | 
| Wicklow | 18 July 1859[18 1] | Lord Proby |  | Liberal | Lord Proby |  | Liberal | Comptroller of the Household[18 2] | 
| Wolverhampton | 9 July 1859[18 1] | Charles Pelham Villiers |  | Liberal | Charles Pelham Villiers |  | Liberal | President of the Poor Law Board[18 2] | 
| Ashton-under-Lyne | 9 July 1859[18 1] | Thomas Milner Gibson |  | Liberal | Thomas Milner Gibson |  | Liberal | President of the Board of Trade[18 2] | 
| West Gloucestershire | 7 July 1859[18 1] | Robert Kingscote |  | Liberal | Robert Kingscote |  | Liberal | Groom in Waiting[18 2] | 
| Lichfield | 6 July 1859[18 1] | Lord Alfred Paget |  | Liberal | Lord Alfred Paget |  | Liberal | Chief Equerry and Clerk Marshal[18 2] | 
| Kerry | 5 July 1859[18 1] | Valentine Browne |  | Liberal | Valentine Browne |  | Liberal | Vice-Chamberlain of the Household[18 2][18 3] | 
| County Cork | 5 July 1859[18 1] | Rickard Deasy |  | Liberal | Rickard Deasy |  | Liberal | Solicitor General for Ireland[18 2] | 
| Oxford University | 1 July 1859 | William Ewart Gladstone |  | Peelite | William Ewart Gladstone |  | Liberal | Chancellor of the Exchequer[18 2] | 
| Clonmel | 1 July 1859[18 1] | John Bagwell |  | Liberal | John Bagwell |  | Liberal | Lord Commissioner of the Treasury[18 2] | 
| Ennis | 29 June 1859[18 1] | John FitzGerald |  | Liberal | John FitzGerald |  | Liberal | Attorney General for Ireland[18 2] | 
| South Wiltshire | 29 June 1859[18 1] | Sidney Herbert |  | Liberal | Sidney Herbert |  | Liberal | Secretary of State for War and Secretary at War[18 2] | 
| Edinburgh | 28 June 1859[18 1] | James Moncreiff |  | Liberal | James Moncreiff |  | Liberal | Lord Advocate[18 2] | 
| Sandwich | 28 June 1859 | Edward Knatchbull-Hugessen |  | Liberal | Edward Knatchbull-Hugessen |  | Liberal | Lord Commissioner of the Treasury[18 2] | 
| Norwich | 28 June 1859 | William Keppel |  | Liberal | William Keppel |  | Liberal | Treasurer of the Household[18 2][18 4] | 
| Newcastle upon Tyne | 28 June 1859 | Thomas Emerson Headlam |  | Liberal | Thomas Emerson Headlam |  | Liberal | Judge Advocate General[18 2] | 
| Halifax | 28 June 1859[18 1] | Charles Wood |  | Liberal | Charles Wood |  | Liberal | Secretary of State for India[18 2] | 
| Bedford | 28 June 1859 | Samuel Whitbread |  | Liberal | Samuel Whitbread |  | Liberal | Civil Lord of the Admiralty[18 2] | 
| Wigtown Burghs | 27 June 1859[18 1] | William Dunbar |  | Liberal | William Dunbar |  | Liberal | Lord Commissioner of the Treasury[18 2] | 
| Radnor Boroughs | 27 June 1859[18 1] | George Cornewall Lewis |  | Liberal | George Cornewall Lewis |  | Liberal | Home Secretary[18 2] | 
| Wolverhampton | 27 June 1859[18 1] | Richard Bethell |  | Liberal | Richard Bethell |  | Liberal | Attorney General for England and Wales[18 2] | 
| Tiverton | 27 June 1859[18 1] | Henry John Temple |  | Liberal | Henry John Temple |  | Liberal | Prime Minister and First Lord of the Treasury[18 2] | 
| Reading | 27 June 1859[18 1] | Henry Singer Keating |  | Liberal | Henry Singer Keating |  | Liberal | Solicitor General for England and Wales[18 2] | 
| Oxford | 27 June 1859[18 1] | Edward Cardwell |  | Liberal | Edward Cardwell |  | Liberal | Chief Secretary for Ireland[18 2] | 
| Morpeth | 27 June 1859[18 1] | George Grey |  | Liberal | George Grey |  | Liberal | Chancellor of the Duchy of Lancaster[18 2] | 
| Lewes | 27 June 1859[18 1] | Henry Fitzroy |  | Liberal | Henry Fitzroy |  | Liberal | First Commissioner of Works[18 2] | 
| Devonport | 27 June 1859[18 1] | James Wilson |  | Liberal | James Wilson |  | Liberal | Vice-President of the Board of Trade and Paymaster General[18 2] | 
| Calne | 27 June 1859[18 1] | Robert Lowe |  | Liberal | Robert Lowe |  | Liberal | Vice-President of the Committee of the Council on Education[18 2] | 
| Ashton-under-Lyne | 27 June 1859[18 1] | Thomas Milner Gibson |  | Liberal | Thomas Milner Gibson |  | Liberal | President of the Poor Law Board[18 2] | 
| City of London | 27 June 1859[18 1] | Lord John Russell |  | Liberal | Lord John Russell |  | Liberal | Foreign Secretary[18 2] | 
| 17th Parliament (1857–1859)[edit] | 
| By-election | Date | Former incumbent | Party | Winner | Party | Position | 
| Stirlingshire | 14 March 1859[17 1] | Peter Blackburn |  | Conservative | Peter Blackburn |  | Conservative | Junior Lord of the Treasury[17 2] | 
| North Northumberland | 10 March 1859[17 1] | Algernon Percy |  | Conservative | Algernon Percy |  | Conservative | Vice-President of the Board of Trade and Paymaster General[17 2] | 
| West Sussex | 9 March 1859[17 1] | Charles Gordon-Lennox |  | Conservative | Charles Gordon-Lennox |  | Conservative | President of the Poor Law Board[17 2] | 
| North Wiltshire | 8 March 1859[17 1] | T. H. S. Sotheron-Estcourt |  | Conservative | T. H. S. Sotheron-Estcourt |  | Conservative | Home Secretary[17 2] | 
| Tewkesbury | 8 March 1859 | Frederick Lygon |  | Conservative | Frederick Lygon |  | Conservative | Civil Lord of the Admiralty[17 2] | 
| Boston | 3 February 1859[17 1] | William Henry Adams |  | Conservative | William Henry Adams |  | Conservative | Recorder of Derby[17 2] | 
| Hertfordshire | 8 June 1858[17 1] | Edward Bulwer-Lytton |  | Conservative | Edward Bulwer-Lytton |  | Conservative | Secretary of State for the Colonies[17 2] | 
| King's Lynn | 5 June 1858[17 1] | Lord Stanley |  | Conservative | Lord Stanley |  | Conservative | President of the Board of Control[17 2] | 
| City Durham | 17 March 1858[17 1] | John Mowbray |  | Conservative | John Mowbray |  | Conservative | Judge Advocate General[17 2] | 
| Tyrone | 11 March 1858[17 1] | Lord Claud Hamilton |  | Conservative | Lord Claud Hamilton |  | Conservative | Treasurer of the Household[17 2] | 
| North Northumberland | 11 March 1858[17 1] | Algernon Percy |  | Conservative | Algernon Percy |  | Conservative | Civil Lord of the Admiralty[17 2] | 
| County Dublin | 11 March 1858[17 1] | Thomas Edward Taylor |  | Conservative | Thomas Edward Taylor |  | Conservative | Junior Lord of the Treasury[17 2] | 
| South Shropshire | 9 March 1858[17 1] | Orlando Bridgeman |  | Conservative | Orlando Bridgeman |  | Conservative | Vice-Chamberlain of the Household[17 2] | 
| Enniskillen | 9 March 1858[17 1] | James Whiteside |  | Conservative | James Whiteside |  | Conservative | Attorney-General for Ireland[17 2] | 
| North Staffordshire | 8 March 1858[17 1] | Charles Adderley |  | Conservative | Charles Adderley |  | Conservative | Vice-President of the Committee of the Council on Education and President of the Board of Health[17 2] | 
| North Leicestershire | 8 March 1858[17 1] | Lord John Manners |  | Conservative | Lord John Manners |  | Conservative | First Commissioner of Works[17 2] | 
| Buckinghamshire | 8 March 1858[17 1] | Benjamin Disraeli |  | Conservative | Benjamin Disraeli |  | Conservative | Chancellor of the Exchequer[17 2] | 
| East Suffolk | 6 March 1858[17 1] | Fitzroy Kelly |  | Conservative | Fitzroy Kelly |  | Conservative | Attorney General for England and Wales[17 2] | 
| Oxfordshire | 6 March 1858[17 1] | J. W. Henley |  | Conservative | J. W. Henley |  | Conservative | President of the Board of Trade[17 2] | 
| Chichester | 6 March 1858[17 1] | Lord Henry Lennox |  | Conservative | Lord Henry Lennox |  | Conservative | Junior Lord of the Treasury[17 2] | 
| North Wiltshire | 5 March 1858[17 1] | T. H. S. Sotheron-Estcourt |  | Conservative | T. H. S. Sotheron-Estcourt |  | Conservative | President of the Poor Law Board[17 2] | 
| Belfast | 5 March 1858[17 1] | Hugh Cairns |  | Conservative | Hugh Cairns |  | Conservative | Solicitor General for England and Wales[17 2] | 
| King's Lynn | 4 March 1858[17 1] | Lord Stanley |  | Conservative | Lord Stanley |  | Conservative | Secretary of State for the Colonies[17 2] | 
| Huntingdon | 4 March 1858[17 1] | Jonathan Peel |  | Conservative | Jonathan Peel |  | Conservative | Secretary of State for War and Secretary at War[17 2] | 
| Cambridge University | 4 March 1858[17 1] | Spencer Horatio Walpole |  | Conservative | Spencer Horatio Walpole |  | Conservative | Home Secretary[17 2] | 
| Wenlock | 3 March 1858[17 1] | George Weld-Forester |  | Conservative | George Weld-Forester |  | Conservative | Comptroller of the Household[17 2] | 
| Droitwich | 3 March 1858[17 1] | Sir John Pakington |  | Conservative | Sir John Pakington |  | Conservative | First Lord of the Admiralty[17 2] | 
| Cockermouth | 3 March 1858[17 1] | Lord Naas |  | Conservative | Lord Naas |  | Conservative | Chief Secretary for Ireland[17 2] | 
| Bridgnorth | 3 March 1858[17 1] | Henry Whitmore |  | Conservative | Henry Whitmore |  | Conservative | Junior Lord of the Treasury[17 2] | 
| Kerry | 9 June 1857[17 1] | Henry Arthur Herbert |  | Whig | Henry Arthur Herbert |  | Whig | Chief Secretary for Ireland[17 2] | 
| Reading | 2 June 1857[17 1] | Henry Singer Keating |  | Whig | Henry Singer Keating |  | Whig | Solicitor General for England and Wales[17 2] | 
| Penryn and Falmouth | 27 May 1857[17 1] | Thomas Baring |  | Whig | Thomas Baring |  | Whig | Civil Lord of the Admiralty[17 2] | 
| 16th Parliament (1852–1857)[edit] | 
| By-election | Date | Former incumbent | Party | Winner | Party | Position | 
| County Limerick | 17 February 1857[16 1] | William Monsell |  | Whig | William Monsell |  | Whig | President of the Board of Health[16 2] | 
| Buteshire | 12 February 1857[16 1] | James Stuart-Wortley |  | Peelite | James Stuart-Wortley |  | Peelite | Solicitor General for England and Wales[16 2] | 
| Hertford | 9 February 1857[16 1] | William Cowper |  | Whig | William Cowper |  | Whig | Vice-President of the Committee of the Council on Education[16 2] | 
| Aylesbury | 9 February 1857[16 1] | Richard Bethell |  | Whig | Richard Bethell |  | Whig | Attorney General for England and Wales[16 2] | 
| Kerry | 9 August 1856[16 1] | Valentine Browne |  | Whig | Valentine Browne |  | Whig | Comptroller of the Household[16 2] | 
| Ennis | 8 April 1856[16 1] | John FitzGerald |  | Whig | John FitzGerald |  | Whig | Attorney-General for Ireland[16 2] | 
| Leeds | 6 February 1856[16 1] | Matthew Talbot Baines |  | Whig | Matthew Talbot Baines |  | Whig | Chancellor of the Duchy of Lancaster[16 2] | 
| Taunton | 5 February 1856[16 1] | Henry Labouchere |  | Whig | Henry Labouchere |  | Whig | Secretary of State for the Colonies[16 2] | 
| Kilmarnock Burghs | 16 August 1855[16 1] | Edward Pleydell-Bouverie |  | Whig | Edward Pleydell-Bouverie |  | Whig | President of the Poor Law Board[16 2] | 
| Kidderminster | 14 August 1855[16 1] | Robert Lowe |  | Whig | Robert Lowe |  | Whig | Vice-President of the Board of Trade and Paymaster General[16 2] | 
| Hertford | 14 August 1855[16 1] | William Cowper |  | Whig | William Cowper |  | Whig | President of the Board of Health[16 2] | 
| Marylebone | 28 July 1855[16 1] | Sir Benjamin Hall |  | Peelite | Sir Benjamin Hall |  | Peelite | First Commissioner of Works[16 2] | 
| Southwark | 27 July 1855[16 1] | Sir William Molesworth |  | Radical | Sir William Molesworth |  | Radical | Secretary of State for the Colonies[16 2] | 
| Kilmarnock Burghs | 7 April 1855[16 1] | Edward Pleydell-Bouverie |  | Whig | Edward Pleydell-Bouverie |  | Whig | Vice-President of the Board of Trade and Paymaster General[16 2] | 
| Lewes | 5 April 1855[16 1] | Henry Brand |  | Whig | Henry Brand |  | Whig | Junior Lord of the Treasury[16 2] | 
| Gloucester | 31 March 1855[16 1] | William Philip Price |  | Whig | William Philip Price |  | Whig | Seeks re-election after his firm was granted a contract to supply huts to the army in the Crimea | 
| Tamworth | 14 March 1855[16 1] | Sir Robert Peel |  | Peelite | Sir Robert Peel |  | Peelite | Civil Lord of the Admiralty[16 2] | 
| Portsmouth | 14 March 1855 | Charles Monck |  | Whig | Charles Monck |  | Whig | Junior Lord of the Treasury[16 2] | 
| Forfarshire | 10 March 1855[16 1] | Adam Duncan |  | Whig | Adam Duncan |  | Whig | Junior Lord of the Treasury[16 2] | 
| Ennis | 8 March 1855[16 1] | John FitzGerald |  | Independent Irish | John FitzGerald |  | Whig | Solicitor-General for Ireland[16 2] | 
| Athlone | 7 March 1855[16 1] | William Keogh |  | Whig | William Keogh |  | Whig | Attorney-General for Ireland[16 2] | 
| Stroud | 6 March 1855[16 1] | Edward Horsman |  | Whig | Edward Horsman |  | Whig | Chief Secretary for Ireland[16 2] | 
| Radnor Boroughs | 5 March 1855[16 1] | George Cornewall Lewis |  | Whig | George Cornewall Lewis |  | Whig | Chancellor of the Exchequer[16 2] | 
| Northampton | 5 March 1855[16 1] | Robert Vernon Smith |  | Whig | Robert Vernon Smith |  | Whig | President of the Board of Control[16 2] | 
| Halifax | 3 March 1855[16 1] | Sir Charles Wood |  | Whig | Sir Charles Wood |  | Whig | First Lord of the Admiralty[16 2] | 
| City of London | 3 March 1855[16 1] | Lord John Russell |  | Whig | Lord John Russell |  | Whig | Secretary of State for the Colonies[16 2] | 
| South Wiltshire | 15 February 1855[16 1] | Sidney Herbert |  | Peelite | Sidney Herbert |  | Peelite | Secretary of State for the Colonies[16 2] | 
| Tiverton | 12 February 1855[16 1] | Henry John Temple |  | Whig | Henry John Temple |  | Whig | Prime Minister and First Lord of the Treasury[16 2] | 
| Sunderland | 2 January 1855 | William Digby Seymour |  | Whig | Henry Fenwick |  | Whig | Recorder of Newcastle[16 2] | 
| Marylebone | 16 August 1854[16 1] | Sir Benjamin Hall |  | Whig | Sir Benjamin Hall |  | Whig | President of the Board of Health[16 2] | 
| Morpeth | 17 June 1854[16 1] | Sir George Grey |  | Whig | Sir George Grey |  | Whig | Secretary of State for the Colonies[16 2] | 
| City of London | 14 June 1854[16 1] | Lord John Russell |  | Whig | Lord John Russell |  | Whig | Lord President of the Council[16 2] | 
| Southampton | 12 April 1854[16 1] | Alexander Cockburn |  | Whig | Alexander Cockburn |  | Whig | Recorder of Bristol[16 2] | 
| Louth | 27 February 1854 | Chichester Fortescue |  | Whig | Chichester Fortescue |  | Whig | Junior Lord of the Treasury[16 2] | 
| Athlone | 23 April 1853 | William Keogh |  | Independent Irish | William Keogh |  | Whig | Solicitor-General for Ireland[16 2] | 
| Forfarshire | 25 February 1853[16 1] | Lauderdale Maule |  | Whig | Lauderdale Maule |  | Whig | Surveyor-General of the Ordnance[16 2] | 
| Oxford University | 20 January 1853 | William Ewart Gladstone |  | Peelite | William Ewart Gladstone |  | Peelite | Chancellor of the Exchequer[16 2] | 
| Carlow Borough | 20 January 1853 | John Sadleir |  | Independent Irish | John Alexander |  | Conservative | Junior Lord of the Treasury[16 2] | 
| County Limerick | 12 January 1853[16 1] | William Monsell |  | Whig | William Monsell |  | Whig | Clerk of the Ordnance[16 2] | 
| Dumfriesshire | 12 January 1853[16 1] | Archibald Douglas |  | Peelite | Archibald Douglas |  | Peelite | Comptroller of the Household[16 2] | 
| South Wiltshire | 11 January 1853[16 1] | Sidney Herbert |  | Peelite | Sidney Herbert |  | Peelite | Secretary at War[16 2] | 
| Haddingtonshire | 11 January 1853[16 1] | Francis Charteris |  | Peelite | Francis Charteris |  | Peelite | Junior Lord of the Treasury[16 2] | 
| Cavan | 10 January 1853[16 1] | Sir John Young |  | Peelite | Sir John Young |  | Peelite | Chief Secretary for Ireland[16 2] | 
| Southampton | 7 January 1853 | Sir Alexander Cockburn |  | Whig | Sir Alexander Cockburn |  | Whig | Attorney General for England and Wales[16 2] | 
| Aylesbury | 6 January 1853[16 1] | Richard Bethell |  | Whig | Richard Bethell |  | Whig | Solicitor General for England and Wales[16 2] | 
| Lichfield | 5 January 1853[16 1] | Lord Alfred Paget |  | Whig | Lord Alfred Paget |  | Whig | Chief Equerry and Clerk Marshal[16 2] | 
| Halifax | 5 January 1853 | Charles Wood |  | Whig | Charles Wood |  | Whig | President of the Board of Control[16 2] | 
| Wolverhampton | 4 January 1853[16 1] | Charles Pelham Villiers |  | Whig | Charles Pelham Villiers |  | Whig | Judge Advocate General[16 2] | 
| Marlborough | 4 January 1853[16 1] | Lord Ernest Bruce |  | Peelite | Lord Ernest Bruce |  | Peelite | Vice-Chamberlain of the Household[16 2] | 
| Leith Burghs | 4 January 1853[16 1] | James Moncreiff |  | Whig | James Moncreiff |  | Whig | Lord Advocate[16 2] | 
| Gloucester | 4 January 1853 | Maurice Berkeley |  | Whig | Maurice Berkeley |  | Whig | Second Sea Lord[16 2] | 
| Brighton | 4 January 1853[16 1] | Lord Alfred Hervey |  | Peelite | Lord Alfred Hervey |  | Peelite | Junior Lord of the Treasury[16 2] | 
| Tiverton | 3 January 1853[16 1] | Henry John Temple |  | Whig | Henry John Temple |  | Whig | Home Secretary[16 2] | 
| Carlisle | 3 January 1853[16 1] | Matthew Talbot Baines |  | Whig | Matthew Talbot Baines |  | Whig | President of the Poor Law Board[16 2] | 
| City of London | 3 January 1853[16 1] | Lord John Russell |  | Whig | Lord John Russell |  | Whig | Foreign Secretary[16 2] | 
| Scarborough | 1 January 1853[16 1] | George Phipps |  | Whig | George Phipps |  | Whig | Treasurer of the Household[16 2] | 
| Nottingham | 1 January 1853[16 1] | Edward Strutt |  | Whig | Edward Strutt |  | Whig | Chancellor of the Duchy of Lancaster[16 2] | 
| Hertford | 1 January 1853[16 1] | William Cowper |  | Whig | William Cowper |  | Whig | Civil Lord of the Admiralty[16 2] | 
| Carlisle | 1 January 1853[16 1] | Sir James Graham |  | Peelite | Sir James Graham |  | Peelite | First Lord of the Admiralty[16 2] | 
| Southwark | 1 January 1853[16 1] | Sir William Molesworth |  | Radical | Sir William Molesworth |  | Radical | First Commissioner of Works[16 2] | 
| 15th Parliament (1847–1852)[edit] | 
| By-election | Date | Former incumbent | Party | Winner | Party | Position | 
| Dungannon | 24 March 1852[15 1] | William Knox |  | Conservative | William Knox |  | Conservative | Parliamentary Groom in Waiting[15 2] | 
| South Shropshire | 23 March 1852[15 1] | Orlando Bridgeman |  | Conservative | Orlando Bridgeman |  | Conservative | Vice-Chamberlain of the Household[15 2] | 
| East Retford | 19 March 1852[15 1] | George Monckton-Arundell |  | Conservative | George Monckton-Arundell |  | Conservative | Lord-in-waiting[15 2] | 
| County Londonderry | 13 March 1852[15 1] | Thomas Bateson |  | Conservative | Thomas Bateson |  | Conservative | Junior Lord of the Treasury[15 2] | 
| North Lincolnshire | 13 March 1852[15 1] | Robert Christopher |  | Conservative | Robert Christopher |  | Conservative | Resignation pending appointment as Chancellor of the Duchy of Lancaster | 
| Kildare | 13 March 1852[15 1][15 3] | Richard Bourke |  | Conservative | William H. F. Cogan |  | Whig | Chief Secretary for Ireland[15 2] | 
| Tyrone | 12 March 1852[15 1] | Lord Claud Hamilton |  | Conservative | Lord Claud Hamilton |  | Conservative | Treasurer of the Household[15 2] | 
| South Lincolnshire | 12 March 1852[15 1] | Sir John Trollope |  | Conservative | Sir John Trollope |  | Conservative | President of the Poor Law Board[15 2] | 
| Buckinghamshire | 12 March 1852[15 1] | Benjamin Disraeli |  | Conservative | Benjamin Disraeli |  | Conservative | Chancellor of the Exchequer[15 2] | 
| Oxfordshire | 10 March 1852[15 1] | J. W. Henley |  | Conservative | J. W. Henley |  | Conservative | President of the Board of Trade[15 2] | 
| East Riding of Yorkshire | 9 March 1852[15 1] | Arthur Duncombe |  | Conservative | Arthur Duncombe |  | Conservative | Fourth Naval Lord[15 2] | 
| North Essex | 9 March 1852[15 1] | William Beresford |  | Conservative | William Beresford |  | Conservative | Secretary at War[15 2] | 
| Enniskillen | 9 March 1852 | James Whiteside |  | Conservative | James Whiteside |  | Conservative | Solicitor-General for Ireland[15 2] | 
| Dublin University | 9 March 1852[15 1] | Joseph Napier |  | Conservative | Joseph Napier |  | Conservative | Attorney-General for Ireland[15 2] | 
| Dorset | 9 March 1852[15 1] | George Bankes |  | Conservative | George Bankes |  | Conservative | Judge Advocate General[15 2] | 
| Portarlington | 8 March 1852[15 1] | Francis Plunkett Dunne |  | Conservative | Francis Plunkett Dunne |  | Conservative | Clerk of the Ordnance[15 2] | 
| Stamford | 6 March 1852[15 1] | John Charles Herries |  | Conservative | John Charles Herries |  | Conservative | President of the Board of Control[15 2] | 
| Midhurst | 5 March 1852[15 1] | Spencer Horatio Walpole |  | Conservative | Spencer Horatio Walpole |  | Conservative | Home Secretary[15 2] | 
| Buckingham | 5 March 1852[15 1] | Marquess of Chandos |  | Conservative | Marquess of Chandos |  | Conservative | Junior Lord of the Treasury[15 2] | 
| Abingdon | 5 March 1852[15 1] | Sir Frederic Thesiger |  | Conservative | Sir Frederic Thesiger |  | Conservative | Attorney General for England and Wales[15 2] | 
| Droitwich | 4 March 1852[15 1] | Sir John Pakington |  | Conservative | Sir John Pakington |  | Conservative | Secretary of State for War and the Colonies[15 2] | 
| Colchester | 4 March 1852[15 1] | Lord John Manners |  | Conservative | Lord John Manners |  | Conservative | First Commissioner of Works[15 2] | 
| Chichester | 4 March 1852[15 1] | Lord Henry Lennox |  | Conservative | Lord Henry Lennox |  | Conservative | Junior Lord of the Treasury[15 2] | 
| Wenlock | 3 March 1852[15 1] | George Weld-Forester |  | Conservative | George Weld-Forester |  | Conservative | Comptroller of the Household[15 2] | 
| Northampton | 11 February 1852 | Robert Vernon Smith |  | Whig | Robert Vernon Smith |  | Whig | Secretary at War[15 2] | 
| Perth | 9 February 1852[15 1] | Fox Maule |  | Whig | Fox Maule |  | Whig | President of the Board of Control[15 2] | 
| Scarborough | 19 July 1851 | George Phipps |  | Whig | George Frederick Young |  | Conservative | Comptroller of the Household[15 2] | 
| Oxford | 3 April 1851[15 1] | William Wood |  | Whig | William Wood |  | Whig | Solicitor General for England and Wales[15 2] | 
| Southampton | 2 April 1851[15 1] | Alexander Cockburn |  | Whig | Alexander Cockburn |  | Whig | Attorney General for England and Wales[15 2] | 
| Devonport | 2 April 1851[15 1] | John Romilly |  | Whig | John Romilly |  | Whig | Master of the Rolls[15 2] | 
| Windsor | 10 February 1851[15 1] | John Hatchell |  | Whig | John Hatchell |  | Whig | Attorney-General for Ireland[15 2] | 
| Southampton | 17 July 1850[15 1] | Alexander Cockburn |  | Whig | Alexander Cockburn |  | Whig | Solicitor General for England and Wales[15 2] | 
| Devonport | 17 July 1850[15 1] | Sir John Romilly |  | Whig | Sir John Romilly |  | Whig | Attorney General for England and Wales[15 2] | 
| Totnes | 30 March 1850[15 1] | Lord Seymour |  | Whig | Lord Seymour |  | Whig | First Commissioner of Woods and Forests[15 2] | 
| Sutherland | 5 June 1849[15 1] | Sir David Dundas |  | Whig | Sir David Dundas |  | Whig | Judge Advocate General[15 2] | 
| Kingston upon Hull | 7 February 1849[15 1] | Matthew Talbot Baines |  | Whig | Matthew Talbot Baines |  | Whig | President of the Poor Law Board[15 2] | 
| Portsmouth | 6 February 1849[15 1] | Francis Baring |  | Whig | Francis Baring |  | Whig | First Lord of the Admiralty[15 2] | 
| Devonport | 3 April 1848[15 1] | John Romilly |  | Whig | John Romilly |  | Whig | Solicitor General for England and Wales[15 2] | 
| Wells | 27 December 1847[15 1] | William Hayter |  | Whig | William Hayter |  | Whig | Judge Advocate General[15 2] | 
| Calne | 27 December 1847[15 1] | Henry Petty-Fitzmaurice |  | Whig | Henry Petty-Fitzmaurice |  | Whig | Junior Lord of the Treasury[15 2] | 
| Newcastle-under-Lyme | 15 December 1847 | Samuel Christy |  | Conservative | Samuel Christy |  | Conservative | Seeks re-election due to his firm holding a government contract | 
| Edinburgh | 15 December 1847[15 1] | Charles Cowan |  | Whig | Charles Cowan |  | Whig | Disqualification (held government contract) | 
| Liskeard | 14 December 1847[15 1] | Charles Buller |  | Whig | Charles Buller |  | Whig | President of the Poor Law Board[15 2] | 
| 14th Parliament (1841–1847)[edit] | 
| By-election | Date | Former incumbent | Party | Winner | Party | Position | 
| Derby | 4 September 1846 | Edward Strutt |  | Whig | Edward Strutt |  | Whig | Resignation pending appointment as President of the Railway Commission | 
| St. Albans | 11 August 1846 | William Hare |  | Whig | Benjamin Bond Cabbell |  | Conservative | Lord-in-waiting[14 1] | 
| Chester | 8 August 1846[14 2] | Lord Robert Grosvenor |  | Whig | Lord Robert Grosvenor |  | Whig | Treasurer of the Household[14 1] | 
| Sutherland | 28 July 1846[14 2] | David Dundas |  | Whig | David Dundas |  | Whig | Solicitor General for England and Wales[14 1] | 
| Roscommon | 21 July 1846[14 2] | Denis O'Conor |  | Irish Repeal | Denis O'Conor |  | Whig | Junior Lord of the Treasury[14 1] | 
| West Riding of Yorkshire | 18 July 1846[14 2] | George Howard |  | Whig | George Howard |  | Whig | First Commissioner of Woods and Forests[14 1] | 
| South Staffordshire | 17 July 1846[14 2] | George Anson |  | Whig | George Anson |  | Whig | Clerk of the Ordnance[14 1] | 
| Kirkcudbrightshire | 17 July 1846[14 2] | Thomas Maitland |  | Whig | Thomas Maitland |  | Whig | Solicitor General for Scotland[14 1] | 
| Liskeard | 15 July 1846[14 2] | Charles Buller |  | Whig | Charles Buller |  | Whig | Judge Advocate General[14 1] | 
| Lichfield | 15 July 1846[14 2] | Lord Alfred Paget |  | Whig | Lord Alfred Paget |  | Whig | Chief Equerry and Clerk Marshal[14 1] | 
| Edinburgh | 15 July 1846 | Thomas Babington Macaulay |  | Whig | Thomas Babington Macaulay |  | Whig | Paymaster General[14 1] | 
| Richmond | 13 July 1846[14 2] | Henry Rich |  | Whig | Henry Rich |  | Whig | Junior Lord of the Treasury[14 1] | 
| Manchester | 13 July 1846[14 2] | Thomas Milner Gibson |  | Whig | Thomas Milner Gibson |  | Whig | Vice-President of the Board of Trade[14 1] | 
| Greenwich | 13 July 1846[14 2] | James Whitley Deans Dundas |  | Whig | James Whitley Deans Dundas |  | Whig | Second Naval Lord[14 1] | 
| Edinburgh | 13 July 1846[14 2] | William Gibson-Craig |  | Whig | William Gibson-Craig |  | Whig | Junior Lord of the Treasury[14 1] | 
| Tower Hamlets | 11 July 1846[14 2] | Charles Richard Fox |  | Whig | Charles Richard Fox |  | Whig | Surveyor-General of the Ordnance[14 1] | 
| Plymouth | 11 July 1846 | Hugh Fortescue |  | Whig | Hugh Fortescue |  | Whig | Junior Lord of the Treasury[14 1] | 
| Perth | 11 July 1846[14 2] | Fox Maule |  | Whig | Fox Maule |  | Whig | Secretary at War[14 1] | 
| Hertford | 11 July 1846[14 2] | William Cowper |  | Whig | William Cowper |  | Whig | Civil Lord of the Admiralty[14 1] | 
| Gloucester | 11 July 1846[14 2] | Maurice Berkeley |  | Whig | Maurice Berkeley |  | Whig | Third Naval Lord[14 1] | 
| Evesham | 11 July 1846[14 2] | Marcus Sandys |  | Whig | Marcus Sandys |  | Whig | Comptroller of the Household[14 1] | 
| Chester | 11 July 1846[14 2] | John Jervis |  | Whig | John Jervis |  | Whig | Solicitor General for England and Wales[14 1] | 
| Tiverton | 10 July 1846[14 2] | Henry John Temple |  | Whig | Henry John Temple |  | Whig | Foreign Secretary[14 1] | 
| Taunton | 10 July 1846[14 2] | Henry Labouchere |  | Whig | Henry Labouchere |  | Whig | Resignation pending appointment as Chief Secretary for Ireland | 
| Dungarvan | 10 July 1846[14 2] | Richard Lalor Sheil |  | Whig | Richard Lalor Sheil |  | Whig | Master of the Mint[14 1] | 
| Devonport | 10 July 1846[14 2] | Sir George Grey |  | Whig | Sir George Grey |  | Whig | Home Secretary[14 1] | 
| Leith Burghs | 9 July 1846[14 2] | Andrew Rutherfurd |  | Whig | Andrew Rutherfurd |  | Whig | Lord Advocate[14 1] | 
| Halifax | 9 July 1846[14 2] | Charles Wood |  | Whig | Charles Wood |  | Whig | Chancellor of the Exchequer[14 1] | 
| Worcester | 8 July 1846[14 2] | Thomas Wilde |  | Whig | Denis Le Marchant |  | Whig | Attorney General for England and Wales[14 1] | 
| Nottingham | 8 July 1846[14 2] | John Hobhouse |  | Whig | John Hobhouse |  | Whig | President of the Board of Control[14 1] | 
| City of London | 8 July 1846[14 2] | Lord John Russell |  | Whig | Lord John Russell |  | Whig | Prime Minister and First Lord of the Treasury[14 1] | 
| Windsor | 14 March 1846[14 2] | Ralph Neville |  | Conservative | Ralph Neville |  | Conservative | Junior Lord of the Treasury[14 1] | 
| Stafford | 13 March 1846 | Swynfen Carnegie |  | Conservative | Swynfen Carnegie |  | Conservative | Junior Lord of the Treasury[14 1] | 
| South Nottinghamshire | 27 February 1846 | Henry Pelham-Clinton |  | Conservative | Thomas Thoroton-Hildyard |  | Conservative | Chief Secretary for Ireland[14 1] | 
| Westminster | 19 February 1846 | Henry John Rous |  | Conservative | De Lacy Evans |  | Whig | Fourth Naval Lord[14 1] | 
| Buteshire | 7 February 1846[14 2] | James Stuart-Wortley |  | Conservative | James Stuart-Wortley |  | Conservative | Judge Advocate General[14 1] | 
| Newark | 29 January 1846[14 2][14 3] | William Ewart Gladstone |  | Conservative | John Stuart |  | Conservative | Secretary of State for War and the Colonies[14 1] | 
| Cirencester | 14 August 1845[14 2] | William Cripps |  | Conservative | William Cripps |  | Conservative | Junior Lord of the Treasury[14 1] | 
| Warwick | 13 August 1845[14 2] | Charles Eurwicke Douglas |  | Conservative | Charles Eurwicke Douglas |  | Conservative | Commissioner of Greenwich Hospital[14 1] | 
| Chichester | 12 August 1845[14 2] | Lord Arthur Lennox |  | Conservative | Lord Arthur Lennox |  | Conservative | Clerk of the Ordnance[14 1] | 
| Cambridge | 16 July 1845 | Fitzroy Kelly |  | Conservative | Fitzroy Kelly |  | Conservative | Solicitor General for England and Wales[14 1] | 
| Abingdon | 9 July 1845 | Frederic Thesiger |  | Conservative | Frederic Thesiger |  | Conservative | Attorney General for England and Wales[14 1] | 
| Denbighshire | 7 May 1845[14 2] | Sir Watkin Williams-Wynn |  | Conservative | Sir Watkin Williams-Wynn |  | Conservative | Steward of Bromfield and Yale[14 1] | 
| Peeblesshire | 5 May 1845[14 2] | William Forbes Mackenzie |  | Conservative | William Forbes Mackenzie |  | Conservative | Junior Lord of the Treasury[14 1] | 
| Thetford | 24 February 1845[14 2] | Bingham Baring |  | Conservative | Bingham Baring |  | Conservative | Paymaster General[14 1] | 
| Lewes | 17 February 1845[14 2] | Henry Fitzroy |  | Conservative | Henry Fitzroy |  | Conservative | Civil Lord of the Admiralty[14 1] | 
| South Wiltshire | 15 February 1845[14 2] | Sidney Herbert |  | Conservative | Sidney Herbert |  | Conservative | Secretary at War[14 1] | 
| Stamford | 10 February 1845[14 2] | Sir George Clerk |  | Conservative | Sir George Clerk |  | Conservative | Vice-President of the Board of Trade and Master of the Mint[14 1] | 
| Buckingham | 10 February 1845[14 2] | Thomas Fremantle |  | Conservative | Thomas Fremantle |  | Conservative | Chief Secretary for Ireland[14 1] | 
| Chichester | 27 May 1844[14 2] | Lord Arthur Lennox |  | Conservative | Lord Arthur Lennox |  | Conservative | Junior Lord of the Treasury[14 1] | 
| Buckingham | 25 May 1844[14 2] | Sir Thomas Fremantle |  | Conservative | Sir Thomas Fremantle |  | Conservative | Secretary at War[14 1] | 
| Woodstock | 22 April 1844[14 2] | Frederic Thesiger[14 4] |  | Conservative | John Spencer-Churchill |  | Conservative | Solicitor General for England and Wales[14 1] | 
| Exeter | 20 April 1844 | William Webb Follett |  | Conservative | William Webb Follett |  | Conservative | Attorney General for England and Wales[14 1] | 
| Bandon | 14 February 1842[14 2] | Joseph Devonsher Jackson[14 5] |  | Conservative | Francis Bernard |  | Conservative | Solicitor-General for Ireland[14 1] | 
| Linlithgowshire | 20 October 1841[14 2] | Charles Hope |  | Conservative | Charles Hope |  | Conservative | Commissioner of Greenwich Hospital[14 1] | 
| East Retford | 2 October 1841[14 2] | Arthur Duncombe |  | Conservative | Arthur Duncombe |  | Conservative | Groom in Waiting in Ordinary[14 1] | 
| Cavan | 30 September 1841[14 2] | John Young |  | Conservative | John Young |  | Conservative | Junior Lord of the Treasury[14 1] | 
| County Sligo | 28 September 1841[14 2] | Alexander Perceval |  | Conservative | John Ffolliott |  | Conservative | Junior Lord of the Treasury[14 1][14 6] | 
| Portarlington | 27 September 1841[14 2] | George Dawson-Damer |  | Conservative | George Dawson-Damer |  | Conservative | Comptroller of the Household[14 1] | 
| Monmouthshire | 24 September 1841[14 2] | Lord Granville Somerset |  | Conservative | Lord Granville Somerset |  | Conservative | Chancellor of the Duchy of Lancaster[14 1] | 
| Tyrone | 23 September 1841[14 2] | Henry Lowry-Corry |  | Conservative | Henry Lowry-Corry |  | Conservative | Civil Lord of the Admiralty[14 1] | 
| Buteshire | 23 September 1841[14 2] | William Rae |  | Conservative | William Rae |  | Conservative | Lord Advocate[14 1] | 
| East Cornwall | 22 September 1841[14 2] | Lord Eliot |  | Conservative | Lord Eliot |  | Conservative | Chief Secretary for Ireland[14 1] | 
| Selkirkshire | 21 September 1841[14 2] | Alexander Pringle |  | Conservative | Alexander Pringle |  | Conservative | Junior Lord of the Treasury[14 1] | 
| North Lancashire | 21 September 1841[14 2] | Lord Stanley |  | Conservative | Lord Stanley |  | Conservative | Secretary of State for War and the Colonies[14 1] | 
| Aberdeenshire | 21 September 1841[14 2] | William Gordon |  | Conservative | William Gordon |  | Conservative | Fourth Naval Lord[14 1] | 
| South Nottinghamshire | 20 September 1841[14 2] | Henry Pelham-Clinton |  | Conservative | Henry Pelham-Clinton |  | Conservative | First Commissioner of Woods and Forests[14 1] | 
| Lisburn | 20 September 1841[14 2] | Henry Meynell |  | Conservative | Henry Meynell |  | Conservative | Parliamentary Groom in Waiting[14 1] | 
| East Kent | 20 September 1841[14 2] | Sir Edward Knatchbull |  | Conservative | Sir Edward Knatchbull |  | Conservative | Paymaster General[14 1] | 
| Cardiff Boroughs | 17 September 1841[14 2] | John Iltyd Nicholl |  | Conservative | John Iltyd Nicholl |  | Conservative | Judge Advocate General[14 1] | 
| Launceston | 15 September 1841[14 2] | Henry Hardinge |  | Conservative | Henry Hardinge |  | Conservative | Secretary at War[14 1] | 
| Cambridge University | 15 September 1841[14 2] | Henry Goulburn |  | Conservative | Henry Goulburn |  | Conservative | Chancellor of the Exchequer[14 1] | 
| Wenlock | 14 September 1841[14 2] | James Milnes Gaskell |  | Conservative | James Milnes Gaskell |  | Conservative | Junior Lord of the Treasury[14 1] | 
| Newark | 14 September 1841[14 2] | William Ewart Gladstone |  | Conservative | William Ewart Gladstone |  | Conservative | Vice-President of the Board of Trade and Master of the Mint[14 1] | 
| Marlborough | 14 September 1841[14 2] | Henry Bingham Baring |  | Conservative | Henry Bingham Baring |  | Conservative | Junior Lord of the Treasury[14 1] | 
| Lord Ernest Bruce |  | Conservative | Lord Ernest Bruce |  | Conservative | Vice-Chamberlain of the Household[14 1] | 
| Huntingdon | 14 September 1841[14 2] | Jonathan Peel |  | Conservative | Jonathan Peel |  | Conservative | Surveyor-General of the Ordnance[14 1] | 
| Frederick Pollock |  | Conservative | Frederick Pollock |  | Conservative | Attorney General for England and Wales[14 1] | 
| Chippenham | 14 September 1841[14 2] | Henry George Boldero |  | Conservative | Henry George Boldero |  | Conservative | Clerk of the Ordnance[14 1] | 
| Bury St. Edmunds | 14 September 1841[14 2] | Earl of Jermyn |  | Conservative | Earl of Jermyn |  | Conservative | Treasurer of the Household[14 1] | 
| Tamworth | 13 September 1841[14 2] | Robert Peel |  | Conservative | Robert Peel |  | Conservative | Prime Minister and First Lord of the Treasury[14 1] | 
| Exeter | 13 September 1841[14 2] | William Webb Follett |  | Conservative | William Webb Follett |  | Conservative | Solicitor General for England and Wales[14 1] | 
| Dorchester | 13 September 1841[14 2] | Sir James Graham |  | Conservative | Sir James Graham |  | Conservative | Home Secretary[14 1] | 
| 13th Parliament (1837–1841)[edit] | 
| By-election | Date | Former incumbent | Party | Winner | Party | Position | 
| Clonmel | 21 August 1840[13 1] | David Richard Pigot |  | Whig | David Richard Pigot |  | Whig | Attorney-General for Ireland[13 2] | 
| Cockermouth | 1 June 1840 | Edward Horsman |  | Whig | Edward Horsman |  | Whig | Junior Lord of the Treasury[13 2] | 
| Newark-on-Trent | 25 January 1840 | Thomas Wilde |  | Whig | Thomas Wilde |  | Whig | Solicitor General for England and Wales[13 2] | 
| Edinburgh | 23 January 1840[13 1] | Thomas Babington Macaulay |  | Whig | Thomas Babington Macaulay |  | Whig | Secretary at War[13 2] | 
| Tipperary | 16 September 1839[13 1] | Richard Lalor Sheil |  | Whig | Richard Lalor Sheil |  | Whig | Vice-President of the Board of Trade[13 2] | 
| Waterford City | 6 September 1839[13 1] | Thomas Wyse |  | Whig | Thomas Wyse |  | Whig | Junior Lord of the Treasury[13 2] | 
| Portsmouth | 30 August 1839[13 1] | Francis Baring |  | Whig | Francis Baring |  | Whig | Chancellor of the Exchequer[13 2] | 
| Hertford | 20 May 1839 | William Cowper |  | Whig | William Cowper |  | Whig | Commissioner of Greenwich Hospital[13 2] | 
| Southwark | 27 February 1839[13 1] | Daniel Whittle Harvey |  | Whig | Daniel Whittle Harvey |  | Whig | Registrar of the Metropolitan Public Carriages[13 2] | 
| Devonport | 20 February 1839[13 1] | Sir George Grey |  | Whig | Sir George Grey |  | Whig | Judge Advocate General[13 2] | 
| Tower Hamlets | 11 February 1839[13 1] | Stephen Lushington |  | Whig | Stephen Lushington |  | Whig | Judge of the High Court of Admiralty[13 2] | 
| Clonmel | 16 July 1838[13 1] | Nicholas Ball |  | Whig | Nicholas Ball |  | Whig | Attorney-General for Ireland[13 2] | 
| Devizes | 26 March 1838 | James Whitley Deans Dundas |  | Whig | James Whitley Deans Dundas |  | Whig | Clerk of the Ordnance[13 2] | 
| James Whitley Deans Dundas |  | Whig | George Heneage Walker Heneage |  | Conservative | By-Election result reversed on petition | 
| Tipperary | 27 February 1838 | Richard Lalor Sheil |  | Whig | Richard Lalor Sheil |  | Whig | Commissioner of Greenwich Hospital[13 2] | 
| Galway Borough | 12 February 1838 | Andrew Henry Lynch |  | Whig | Andrew Henry Lynch |  | Whig | Master in Chancery[13 2] | 
| 12th Parliament (1835–1837)[edit] | 
| By-election | Date | Former incumbent | Party | Winner | Party | Position | 
| Cashel | 10 February 1837[12 1] | Stephen Woulfe |  | Whig | Stephen Woulfe |  | Whig | Solicitor-General for Ireland[12 2] | 
| Sheffield | 22 August 1836 | John Parker |  | Whig | John Parker |  | Whig | Junior Lord of the Treasury[12 2] | 
| Dungarvan | 21 September 1835 | Michael O'Loghlen |  | Whig | Michael O'Loghlen |  | Whig | Attorney-General for Ireland[12 2] | 
| Bury St Edmunds | 26 June 1835[12 1] | Lord Charles FitzRoy |  | Whig | Lord Charles FitzRoy |  | Whig | Vice-Chamberlain of the Household[12 2] | 
| Kildare | 26 May 1835[12 1] | Richard More O'Ferrall |  | Whig | Richard More O'Ferrall |  | Whig | Junior Lord of the Treasury[12 2] | 
| Malton | 19 May 1835[12 1] | Charles Pepys |  | Whig | Charles Pepys |  | Whig | First Commissioner of the Great Seal[12 2] | 
| Leith Burghs | 8 May 1835 | John Murray |  | Whig | John Murray |  | Whig | Lord Advocate[12 2] | 
| South Devon | 7 May 1835 | Lord John Russell |  | Whig | Montague Parker |  | Conservative | Home Secretary[12 2] | 
| West Riding of Yorkshire | 6 May 1835 | George Howard |  | Whig | George Howard |  | Whig | Resignation pending appointment as Chief Secretary for Ireland | 
| Dundee | 6 May 1835[12 1] | Sir Henry Parnell |  | Whig | Sir Henry Parnell |  | Whig | Treasurer of the Navy, Treasurer of the Ordnance and Paymaster of the Forces[12 2] | 
| Stirling Burghs | 5 May 1835[12 1] | Archibald Primrose |  | Whig | Archibald Primrose |  | Whig | Civil Lord of the Admiralty[12 2] | 
| Dungarvan | 4 May 1835 | Michael O'Loghlen |  | Whig | Michael O'Loghlen |  | Whig | Solicitor-General for Ireland[12 2] | 
| Clackmannanshire and Kinross-shire | 4 May 1835[12 1] | Charles Adam |  | Whig | Charles Adam |  | Whig | First Naval Lord[12 2] | 
| Kirkcudbrightshire | 2 May 1835[12 1] | Robert Cutlar Fergusson |  | Whig | Robert Cutlar Fergusson |  | Whig | Judge Advocate General[12 2] | 
| Haddington Burghs | 2 May 1835[12 1] | Robert Steuart |  | Whig | Robert Steuart |  | Whig | Junior Lord of the Treasury[12 2] | 
| Elgin Burghs | 2 May 1835[12 1] | Andrew Leith Hay |  | Whig | Andrew Leith Hay |  | Whig | Clerk of the Ordnance[12 2] | 
| North Northumberland | 1 May 1835[12 1] | Henry Grey |  | Whig | Henry Grey |  | Whig | Secretary at War[12 2] | 
| Manchester | 30 April 1835[12 1] | Charles Poulett Thomson |  | Whig | Charles Poulett Thomson |  | Whig | President of the Board of Trade[12 2] | 
| Edinburgh | 30 April 1835[12 1] | John Campbell |  | Whig | John Campbell |  | Whig | Attorney General for England and Wales[12 2] | 
| Taunton | 29 April 1835 | Henry Labouchere |  | Whig | Henry Labouchere |  | Whig | Vice-President of the Board of Trade and Master of the Mint[12 2] | 
| Penryn and Falmouth | 28 April 1835 | Robert Rolfe |  | Whig | Robert Rolfe |  | Whig | Solicitor General for England and Wales[12 2] | 
| Cashel | 28 April 1835[12 1] | Louis Perrin |  | Whig | Louis Perrin |  | Whig | Attorney-General for Ireland[12 2] | 
| Sandwich | 27 April 1835[12 1] | Sir Edward Troubridge |  | Whig | Sir Edward Troubridge |  | Whig | Fourth Naval Lord[12 2] | 
| Newport (I.O.W.) | 27 April 1835[12 1] | William Ord |  | Whig | William Ord |  | Whig | Junior Lord of the Treasury[12 2] | 
| Cambridge | 27 April 1835[12 1] | Thomas Spring Rice |  | Whig | Thomas Spring Rice |  | Whig | Chancellor of the Exchequer[12 2] | 
| Berwick-upon-Tweed | 27 April 1835[12 1] | Rufane Shaw Donkin |  | Whig | Rufane Shaw Donkin |  | Whig | Surveyor-General of the Ordnance[12 2] | 
| Totnes | 24 April 1835[12 1] | Lord Seymour |  | Whig | Lord Seymour |  | Whig | Junior Lord of the Treasury[12 2] | 
| Nottingham | 24 April 1835[12 1] | Sir John Hobhouse |  | Whig | Sir John Hobhouse |  | Whig | President of the Board of Control[12 2] | 
| Cardiff Boroughs | 20 March 1835[12 1] | John Iltyd Nicholl |  | Conservative | John Iltyd Nicholl |  | Conservative | Junior Lord of the Treasury[12 2] | 
| 11th Parliament (1832–1834)[edit] | 
| By-election | Date | Former incumbent | Party | Winner | Party | Position | 
| Kirkcudbrightshire | 3 July 1834[11 1] | Robert Cutlar Fergusson |  | Whig | Robert Cutlar Fergusson |  | Whig | Judge Advocate General[11 2] | 
| Elgin Burghs | 30 June 1834[11 1] | Andrew Leith Hay |  | Whig | Andrew Leith Hay |  | Whig | Clerk of the Ordnance[11 2] | 
| Edinburgh | 23 June 1834[11 1] | James Abercromby |  | Whig | James Abercromby |  | Whig | Master of the Mint[11 2] | 
| Cambridge | 13 June 1834 | Thomas Spring Rice |  | Whig | Thomas Spring Rice |  | Whig | Secretary of State for War and the Colonies[11 2] | 
| Leith Burghs | 2 June 1834 | John Murray |  | Whig | John Murray |  | Whig | Lord Advocate[11 2] | 
| Malton | 4 March 1834[11 1] | Charles Pepys |  | Whig | Charles Pepys |  | Whig | Solicitor General for England and Wales[11 2] | 
| Dudley | 28 February 1834 | John Campbell |  | Whig | Thomas Hawkes |  | Tory | Attorney General for England and Wales[11 2] | 
| South Staffordshire | 7 June 1833 | Edward Littleton |  | Whig | Edward Littleton |  | Whig | Chief Secretary for Ireland[11 2] | 
| North Lancashire | 12 April 1833[11 1] | Edward Stanley |  | Whig | Edward Stanley |  | Whig | Secretary of State for War and the Colonies[11 2] | 
| Coventry | 12 April 1833 | Edward Ellice |  | Whig | Edward Ellice |  | Whig | Secretary at War[11 2] | 
| Gloucester | 9 April 1833 | Maurice Berkeley |  | Whig | Henry Thomas Hope |  | Tory | Fourth Naval Lord[11 2] | 
| Westminster | 4 April 1833[11 1] | Sir John Hobhouse |  | Whig | Sir John Hobhouse |  | Whig | Chief Secretary for Ireland[11 2] | 
| 
^ a b c d e f Uncontested
^ a b c d e f g h i j k l Seat vacated on appointment to the office noted.
 |