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The content of Circular line was merged into Circle Line on 19 March 2020. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted as long as the latter page exists. For the discussion at that location, see its talk page.
This article included entries for things not actually named "Circle/Circular"; I removed them. In my judgement, they didn't fit on this dab page. I could have gone a different way and turned this into a list page instead of a dab, but I chose this method. --Auntof6 (talk) 03:59, 20 September 2010 (UTC)[reply]
Following the 2009 extension to the Hammersmith & City route, London's Circle line no longer operates trains that runs circularly continuously. Unless there is a justifiable reason, Circle line should be removed from this page, as this page only includes trains that run in a 'O' shape, not in a '6' shape. Regards, Hms1103 (talk) 18:36, 6 December 2017 (UTC)[reply]