21 July (releases)


 * 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.