Before becoming a director, David had been an actor and an associate of Rex Tucker, who was involved in the pre-production on Doctor Who in 1963. In this capacity, Tucker offered David the opportunity to play the First Doctor, but David declined. Furthermore, the series' original producer, Verity Lambert, deemed the then thirty-eight-year-old David too young for the part. This fact was mentioned in the 2013 docudrama An Adventure in Space and Time.
He was married to Wendy Williams.
As both The Highlanders and Fury from the Deep are missing all of their episodes, David is one of three directors (along with John Davies and Michael Leeston-Smith) not to have a single surviving Doctor Who episode in the BBC Archives. However David is the only one of the three to have directed multiple stories.
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