On 23 October, the following important behind-the-scenes events were known to have occurred:
- 1964 - "Flashpoint" was recorded, bringing Carole Ann Ford's tenure on Doctor Who to a close.
- 1999 - Recording for The Marian Conspiracy took place.
- 2008 - Recording for The Eight Truths and Worldwide Web took place at The Moat Studios.
- 2009 - Recording for Echoes of Grey took place at The Moat Studios.