13 September (production)


 * 1968 - Location filming for The Invasion concluded. Pre-filming for the story also took place at Ealing Studios on this day. (TCH 13)
 * 1969 - Filming began on Spearhead from Space. These were the first scenes shot in colour, as well as the first starring Jon Pertwee as the Third Doctor.
 * 1971 - Location filming for Day of the Daleks began. (DCOM: Now and Then: Day of the Daleks)
 * 1972 - Location filming for Frontier in Space took place. (REF: Doctor Who The Handbook: The Third Doctor)
 * 1984 - Studio filming for The Two Doctors took place at BBC Television Centre studio 6. (REF: Doctor Who The Handbook: The Sixth Doctor)
 * 2008 - The Big Finish audio story Hothouse was recorded at the Moat Studios.
 * 2010 - The Big Finish audio story The Cold Equations was recorded at the Moat Studios.
 * 2011 - The Big Finish audio story The Wrath of the Iceni was recorded at Audio Sorcery.
 * 2012 - The Big Finish audio story The Apocalypse Mirror was recorded at the Moat Studios.
 * 2013 - Big Finish's audio adaptation of the novel The English Way of Death was recorded at Audio Sorcery,
 * 2019 - Big Finish's audio anthology Stranded 1 was recorded.
 * 2019 - Big Finish's audio anthology The First Doctor Adventures: Volume Five was recorded at the Soundhouse.
 * 2021 - Big Finish announced the second series of The Ninth Doctor Adventures.