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On 5月27日, the following important behind-the-scenes events were known to have occurred:
- 1966 - Episode three of The Savages was recorded at Riverside Studios 1. (TCH 8)
- 1967 - Episode three of The Evil of the Daleks was recorded at Lime Grove Studios D. (TCH 10)
- 1969 - Nicholas Courtney was contracted to return as Brigadier Alistair Gordon Lethbridge-Stewart — this time as part of the regular cast for at least one season.
- 1986 - Studio filming for Mindwarp took place at BBC Television Centre studio 1. (REF: Doctor Who The Handbook: The Sixth Doctor)
- 1993 - The BBC Radio 5 Live audio The Paradise of Death was recorded at Maida Vale 6. (REF: Doctor Who The Handbook: The Third Doctor)
- 1996 - Following the death of Jon Pertwee just one week before its release, a dedication to him was added at the end of the Doctor Who TV movie for the BBC broadcast.
- 2001 - The Big Finish audio story Colditz was recorded at the Moat Studios.
- 2010 - The Big Finish audio story The Perpetual Bond was recorded at the Moat Studios.
- 2016 - Big Finish's audio anthology The Memory Bank and Other Stories was recorded at the Moat Studios.
- 2016 - Big Finish's Christmas-themed Short Trips audio stories The Hesitation Deviation and O Tannenbaum were confirmed.