4 May (production)


 * 1976 - Studio filming for The Masque of Mandragora took place at BBC Television Centre studio 3. (REF: Doctor Who The Handbook: The Fourth Doctor)
 * 1977 - Pre-filming for Horror of Fang Rock took place at Ealing Studios. (REF: Doctor Who The Handbook: The Fourth Doctor)
 * 1978 - Location filming for The Pirate Planet took place. (REF: Doctor Who The Handbook: The Fourth Doctor)
 * 1982 - Location filming for Arc of Infinity took place in Amsterdam. (REF: Doctor Who The Handbook: The Fifth Doctor)
 * 1987 - Studio filming for Time and the Rani took place at BBC Television Centre Studio 1. (Doctor Who The Handbook: The Seventh Doctor)
 * 2013 - Recording for the fourth series of Iris Wildthyme took place at The Moat Studios.
 * 2017 - Big Finish's The Companion Chronicles audio anthology The Second Doctor: Volume Two was recorded.
 * 2017 - Big Finish announced that Jane Slavin had been cast as the Fourth Doctor's companion Ann Kelso.
 * 2020 - The Big Finish audio story Out of Time was recorded remotely.
 * 2022 - Toby Hadoke and Gary Russell recorded their part of the audio commentary for The Abominable Snowmen 's DVD and Blu-ray release. (DCOM: The Abominable Snowmen)
 * 2022 - Big Finish's audio anthology What Lies Inside? was recorded.