31 January (production)


 * 1966 - Pre-filming for The Ark continued at Ealing Studios. (TCH 7)
 * 2003 - Recording for The Bellotron Incident and The Draconian Rage took place.
 * 2006 - Rewrites of Fear Her known as "green script amendments" covered the Tenth Doctor describing the Isolus pod to Rose Tyler. (DWMSE 14)
 * 2012 - Recording for The Jigsaw War took place at The Moat Studios.
 * 2013 - Recording for Lords of the Red Planet took place at The Moat Studios.
 * 2018 - Recording for The Second Doctor: Volume Two took place.