4 October (releases)


 * 1965 - Armada Books published the first paperback edition of the first Doctor Who novelisation, Dr. Who in an Exciting Adventure with the Daleks.
 * 1965 - Part two of the TV Comic story The Ordeals of Demeter was first published.
 * 1969 - Part one of the TV Comic story U.F.O. was first published.
 * 1975 - Part two of Planet of Evil was first broadcast on BBC1.
 * 1975 - Part four of the TV Comic story The Sinister Sea was first published.
 * 1976 - Exploration Earth was first broadcast on BBC Radio 4.
 * 1980 - Part two of Meglos was first broadcast on BBC1.
 * 1986 - Part one of Mindwarp was first broadcast on BBC1.
 * 1989 - Part one of Ghost Light was first broadcast on BBC1.
 * 1990 - DWM 166 was first released by Marvel Comics.
 * 1999 - The Taking of Planet 5 and Divided Loyalties were first published by BBC Books.
 * 1999 - Phantasmagoria was first released by Big Finish.
 * 2002 - The anthology A Life of Surprises was first published by Big Finish Productions.
 * 2003 - The Deadstone Memorial was first published by BBC Books.
 * 2006 - The Doctor Who: Battles in Time comic story Hyperstar Rising was first published.
 * 2007 - The Crystal Snare, War of the Robots, Dark Planet and The Haunted Wagon Train were first published by BBC Books.
 * 2007 - Doctor Who: The Encyclopedia was first published by BBC Books.
 * 2007 - Quiz Book 3 was first published by BBC Children's Books.
 * 2010 - The CD Doctor Who - Series 4 - The Specials was first released by Silva Screen.
 * 2011 - Part two of Sky was first broadcast on CBBC.
 * 2012 - The Angel's Kiss: A Melody Malone Mystery was first published by BBC Digital.
 * 2012 - DWA 289 was first released by BBC Magazines.
 * 2012 - The Official Doctionary was first published by BBC Children's Books.
 * 2012 - The audiobook version of Doctor Who and the Visitation was first released by BBC Audio.
 * 2014 - Kill the Moon was first broadcast on BBC One.
 * 2017 - TCH 78 was first released by Hachette Partworks.
 * 2018 - Day ten of The 13 Days of Doctor Who aired on BBC America.
 * 2018 - The Second UNIT Collection and the audiobook version of Doctor Who and the Mutants were first released by BBC Audio.
 * 2021 - The Collection: Season 23 was re-released as a Standard Edition Blu-ray box set.