On 17 April, the following important behind-the-scenes events were known to have occurred:
- 1964 - "Sentence of Death" was recorded at Lime Grove Studios. (INFO: "Sentence of Death")
- 2007 - Recording for Valhalla took place at The Moat Studios.
- 2009 - Big Finish Productions announced it was ending the Short Trips line in book form, since the BBC had not renewed the company's license to issue Doctor Who stories in print.
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