30 May (production)


 * 1972 - Location filming for Carnival of Monsters took place. (REF: Doctor Who The Handbook: The Third Doctor)
 * 1980 - Studio filming for State of Decay took place at BBC Television Centre studio 6. (REF: Doctor Who The Handbook: The Fourth Doctor)
 * 1989 - Studio filming for Battlefield took place at BBC Television Centre Studio 3. (Doctor Who The Handbook: The Seventh Doctor)
 * 2020 - Doctor Who: Lockdown! hosted a tweetalong of the New Earth trilogy (The End of the World, New Earth and Gridlock).