28 April (production)


 * 1966 - Pre-filming for The Savages concluded at Ealing Studios. (TCH 8)
 * 1967 - Pre-filming for The Evil of the Daleks continued on Stage 3A/B of Ealing Studios. (TCH 10)
 * 1968 - Location filming for The Dominators continued at Olley Sand Pit. (TCH 12)
 * 2001 - Recording for The One Doctor took place at The Moat Studios.
 * 2005 - The first draft script for the story which would become Rise of the Cybermen and The Age of Steel was submitted. (DWMSE 14)
 * 2005 - Recording for Scaredy Cat took place at The Moat Studios.
 * 2009 - Recording for Leviathan took place at The Moat Studios.
 * 2010 - Recording for A Death in the Family took place at The Moat Studios.
 * 2017 - Recording for The Third Doctor Adventures: Volume Three took place at the Soundhouse.
 * 2020 - Recording for Heritage 4 was recorded remotely.