15 April (production)


 * 1965 - Pre-filming for The Chase concluded at Ealing Studios Stage 3A/B. The filming of the battle between the Daleks and the Mechonoids was completed. (TCH 5)
 * 1966 - "A Holiday for the Doctor" was recorded at BBC Television Centre Studio 4. (TCH 7)
 * 1967 - Episode three of The Faceless Ones was recorded at Lime Grove Studios D. (TCH 10)
 * 1981 - Studio filming for Four to Doomsday took place at BBC Television Centre studio 6. (REF: Doctor Who The Handbook: The Fifth Doctor)
 * 1989 - Location filming for The Curse of Fenric took place. (Doctor Who The Handbook: The Seventh Doctor)
 * 2000 - The script to The Eleven Day Empire is written.
 * 2008 - The Big Finish audio story The Boy That Time Forgot was recorded at the Moat Studios.
 * 2015 - Disney XD picked up the rights to air Doctor Who's second, third, and fourth series.
 * 2020 - The Big Finish audio stories He Kills Me, He Kills Me Not, The Enemy of My Enemy and Mutually Assured Destruction were recorded remotely.