4 September (production)


 * 1964 - The original version of "Crisis" was recorded at BBC Television Centre Studio 4. (INFO: "Crisis")
 * 1967 - Location filming for The Abominable Snowmen began in Wales. (TCH 11)
 * 1968 - Location filming for The Invasion continued. (TCH 13)
 * 1969 - Tailor Arthur Davey made finishing touches to his 27 August Third Doctor costume.
 * 1999 - Recording for The Fearmonger took place.
 * 2005 - Recording for the Iris Wildthyme story Wildthyme at Large took place at The Moat Studios.
 * 2012 - Recording for The Seeds of War took place at The Moat Studios.
 * 2013 - Recording for The Age of Endurance took place at the Moat Studios.
 * 2014 - Recording for The Secret History took place at the Moat Studios.
 * 2017 - Recording for The Siege of Big Ben and Flight Into Hull! took place at The Moat Studios.
 * 2017 - Big Finish confirmed Jacob Dudman would be narrating the box sets The Tenth Doctor Chronicles and The Eleventh Doctor Chronicles.
 * 2020 - Recording for The Blazing Hour took place.