23 December (production)


 * 1967 - Episode four of The Enemy of the World was recorded at Lime Grove Studios D. (TCH 11)
 * 1968 - Model filming for The Seeds of Death concluded on Stage 2 of Ealing Studios. (TCH 14)
 * 2019 - Big Finish announced the seventh series of their Doctor Who spin-off The Diary of River Song.