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On 23 October, the following important behind-the-scenes events were known to have occurred:
- 1964 - "Flashpoint" was recorded at Riverside Studios 1, bringing Carole Ann Ford's tenure on Doctor Who to a close. (INFO: The Daleks Invasion of Earth)
- 1969 - Location filming for Spearhead from Space took place. (REF: Doctor Who The Handbook: The Third Doctor)
- 1970 - Studio filming for Terror of the Autons took place at BBC Television Centre 8. (REF: Doctor Who The Handbook: The Third Doctor)
- 1999 - Recording for The Marian Conspiracy took place.
- 2008 - Big Finish's two-part audio story The Eight Truths / Worldwide Web was recorded at the Moat Studios.
- 2009 - Recording for Echoes of Grey took place at The Moat Studios.
- 2012 - The second series of Big Finish's Doctor Who spin-off Counter-Measures was recorded at the Moat Studios.
- 2014 - Big Finish's audio anthology The Third Doctor Adventures was recorded at the Moat Studios.
- 2017 - Big Finish announced the Short Trips audio story Landbound.
- 2018 - Recording for The Monsters of Gokroth took place at the Moat Studios.
- 2018 - Recording for The Dimension Cannon took place.