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On 18 September, the following important behind-the-scenes events were known to have occurred:
- 1963 - The incidental music for An Unearthly Child was recorded by Norman Kay at the Camden Theatre. (INFO: An Unearthly Child)
- 1964 - "World's End" was recorded at Riverside Studios 1. (INFO: "World's End")
- 1969 - Location filming for Spearhead from Space took place. (REF: Doctor Who The Handbook: The Third Doctor)
- 1970 - Location filming for Terror of the Autons took place. (REF: Doctor Who The Handbook: The Third Doctor)
- 1978 - Location filming for The Power of Kroll took place. (REF: Doctor Who The Handbook: The Fourth Doctor)
- 1980 - Studio filming for Warriors' Gate took place at BBC Television Centre studio 3. (REF: Doctor Who The Handbook: The Fourth Doctor)
- 1995 - A month after his last draft, writer Matthew Jacobs submitted yet another major draft, this time with some drastic changes. The death dimension written out, the Master's main focus is now the Millennium Star, a "intergalactic roving force field" that passes by the Earth once a millennium. It's now the Star that the Master wants to use to reshape the universe through the power of the Eye of Harmony. The Master attempts to recruit the Doctor's two companions in this draft, posing as a "false messiah". After meeting with the BBC, Jacobs revised his ideas and handed in a fourth script on 14 November.
- 2012 - The Big Finish audio story Luna Romana was recorded at the Moat Studios.
- 2017 - Big Finish's Torchwood One audio anthology Machines was recorded at the Soundhouse.
- 2019 - Big Finish's audio anthology The First Doctor Adventures: Volume Four was recorded at the Soundhouse.