On 4 March, the following important behind-the-scenes events were known to have occurred:
- 1966 - "The Return" was recorded at Riverside Studios 1. (INFO: "The Return")
- 1967 - Episode one of The Macra Terror was recorded at Lime Grove Studios D. (TCH 10)
- 1968 - Pre-filming for Fury from the Deep continued at Ealing Studios. (TCH 12)
- 2002 - Recording for The Sandman took place at The Moat Studios.
- 2005 - Recording for The Heart's Desire took place.
- 2008 - Russell T Davies began writing the script for The Next Doctor.
- 2019 - Recording for Interstitial and Feast of Fear took place at the Moat Studios.
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