On 20 January, the following important behind-the-scenes events were known to have occurred:
- 1967 - Model filming for The Moonbase took place at Stage 3 of Ealing Studios. (TCH 9)
- 1968 - Episode two of The Web of Fear was recorded at Lime Grove Studios D. (TCH 11)
- 2001 - Recording for Seasons of Fear took place in Bristol.
- 2004 - Recording for The Roof of the World completed at The Moat Studios.
- 2006 - Rehearsals for The Idiot's Lantern were held. (DWMSE 14)
- 2012 - Recording for The Butcher of Brisbane took place at The Moat Studios.
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