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On 3月23日, the following important behind-the-scenes events were known to have occurred:
- 1968 - Episode five of Fury from the Deep was recorded at Lime Grove Studios D. (TCH 12)
- 1969 - Location filming for The War Games began at Sheepcote Valley Rubbish Tip. (TCH 14)
- 1979 - Pre-filming for The Creature from the Pit took place at Ealing Studios. (REF: Doctor Who The Handbook: The Fourth Doctor)
- 2008 - Responding to criticism from his correspondent Benjamin Cook, Russell T Davies agreed to change the ending of Journey's End, removing a planned cliffhanger to lead into The Next Doctor.
- 2009 - The Big Finish audio Paper Cuts took place at the Moat Studios.
- 2018 - Big Finish's audio anthology The Eighth Doctor: Time War: Volume Two was recorded.
- 2020 - The Big Finish audio story He Kills Me, He Kills Me Not was recorded.
- 2022 - Big Finish's audio anthology Beyond War Games was recorded.