On 10 September, the following important behind-the-scenes events were known to have occurred:
- 1969 - Caroline John was announced to the press as the next companion, Liz Shaw.
- 2012 - Recording for Hunters of Earth took place.
- 2013 - The title — though not premise — of the 50th anniversary special The Day of the Doctor was announced online by the BBC, along with a poster.
- 2016 - Recording for Before the Fall took place at The Moat Studios.