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On 7月21日, a number of things set in or relevant to the Doctor Who universe were released or published.
- 1973 - Part three of the TV Action comic story The Vortex was first published.
- 1983 - The novelisation of Four to Doomsday was first released by Target Books.
- 1988 - The novelisation of The Underwater Menace was first released by Target Books.
- 1994 - Blood Harvest and Goth Opera were first published by Virgin Books.
- 2005 - DWM 359 was first released by Panini Comics.
- 2008 - The Brain of Morbius was released on Region 2 DVD.
- 2011 - First Born was first published by BBC Books.
- 2011 - DWA 227 was first released by BBC Magazines.
- 2011 - Web of Lies was released as an app on British iTunes, having been released in America two weeks previous.
- 2011 - Rendition was transmitted on BBC One.
- 2016 - DWA15 17 was first released by Panini Comics.
- 2022 - DWM 580 was released by Panini Comics.
- 2022 - The Return of Robin Hood was released by BBC Books.
- 2022 - The Torchwood - Monthly Range audio story Restricted Items Archive Entries 031-049 was first released by Big Finish.