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On 4月16日, the following important behind-the-scenes events were known to have occurred:
- 1973 - Studio filming for The Green Death took place at BBC Television Centre studio 3. (REF: Doctor Who The Handbook: The Third Doctor)
- 1974 - Studio filming for Planet of the Spiders took place at BBC Television Centre studio 8. (REF: Doctor Who The Handbook: The Third Doctor)
- 2005 - The BBC confirmed that David Tennant would play the Tenth Doctor.
- 2007 - The Big Finish audio story Valhalla took place at the Moat Studios.
- 2008 - The Big Finish audio story The Boy That Time Forgot was recorded at the Moat Studios.
- 2013 - The seventh series of Big Finish's audio series Jago & Litefoot was recorded at the Moat Studios.
- 2018 - The Big Finish audio story Muse of Fire was recorded at the Moat Studios.