This article about a day of the year is currently under construction. It's likely to be a bit messy.
On 31 January, the following important behind-the-scenes events were known to have occurred:
- 1966 - Pre-filming for The Ark continued at Ealing Studios. (TCH 7)
- 1969 - Episode five of The Seeds of Death was recorded at Lime Grove Studios D. (TCH 14)
- 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.