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On 9月27日, the following important behind-the-scenes events were known to have occurred:
- 1963 - Principal photography on Doctor Who commenced with the recording of the Pilot Episode in Lime Grove Studio D.
- 1966 - Pre-filming for The Power of the Daleks continued on Stage 2 of Ealing Studios. (TCH 9)
- 1967 - Pre-filming for The Ice Warriors continued on Stage 3 of Ealing Studios. (TCH 11)
- 1968 - Episode two of The Invasion was recorded at Lime Grove Studios D. (TCH 13)
- 1973 - Location filming for Invasion of the Dinosaurs took place. (REF: Doctor Who The Handbook: The Third Doctor)
- 1974 - Location filming for The Sontaran Experiment took place. (REF: Doctor Who The Handbook: The Fourth Doctor)
- 1984 - Studio filming for The Two Doctors took place. (REF: Doctor Who The Handbook: The Sixth Doctor)
- 2006 - The Big Finish audio story Nocturne was recorded at the Moat Studios.
- 2011 - The first series of Big Finish's Counter-Measures was recorded at the Moat Studios.
- 2013 - Big Finish's audio anthology Dark Eyes 2 was recorded at the Moat Studios.
- 2015 - Big Finish's audio anthology Only the Monstrous was recorded at the Moat Studios.
- 2016 - The second series of Big Finish's audio series Charlotte Pollard was recorded at the Soundhouse.
- 2018 - The Big Finish audio stories The Revisionists and #HarrySullivan were recorded at WiseBuddah.
- 2018 - Big Finish's Torchwood audio story The Green Life was recorded at the Soundhouse.
- 2018 - The Big Finish audio story One Mile Down was recorded at the Moat Studios.
- 2019 - Big Finish's audio releases The First Doctor Adventures: Volume Four and Her Own Bootstraps were recorded at the Soundhouse.