23 May (production)


 * 1966 - Pre-filming for The War Machines began on a warehouse set on Stage 3 of Ealing Studios. (TCH 8)
 * 2008 - The Big Finish audio story The Doll of Death was recorded at the Moat Studios.
 * 2012 - The Big Finish audio story The Crooked Man was recorded at Audio Sorcery.
 * 2015 - The Big Finish audio story for The Black Hole was recorded at the Moat Studios.
 * 2020 - Doctor Who: Lockdown! hosted a tweetalong for An Adventure in Space and Time.
 * 2022 - Big Finish announced The New Adventures of Bernice Summerfield audio anthology Blood & Steel.