20 June (production)


 * 1966 - Location filming for The Smugglers continued. (TCH 8)
 * 1989 - Location filming for Survival took place. (Doctor Who The Handbook: The Seventh Doctor)
 * 2008 - Recording for Return of the Krotons took place at The Moat Studios.
 * 2012 - Recording for Dark Eyes took place at The Moat Studios.
 * 2016 - Recording for The Third Doctor Adventures: Volume 2 took place.
 * 2018 - Recording for God Among Us 1 took place.
 * 2025 - Expiry date of the current licence of Big Finish Productions to produce Doctor Who audio drama.