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On 14 December, the following important behind-the-scenes events were known to have occurred:
- 1966 - Pre-filming for The Underwater Menace began at Ealing Studios. (TCH 9)
- 1971 - Studio filming for The Sea Devils took place at BBC Television Centre studio 8. (REF: Doctor Who The Handbook: The Third Doctor)
- 1977 - OB filming for The Invasion of Time took place. (REF: Doctor Who The Handbook: The Fourth Doctor)
- 2003 - Big Finish's Bernice Summerfield audio story Death and the Daleks was recorded.
- 2007 - The Big Finish audio story The Haunting of Thomas Brewster was recorded at the Moat Studios.
- 2010 - The Big Finish audio Kiss of Death took place at the Moat Studios.
- 2021 - Big Finish's audio anthology Stranded 4 was recorded at PRL Studios.
- 2021 - Big Finish's Master! audio anthology Nemesis Express was recorded.