Geoffrey Bayldon (born 7 January 1924) played Organon in the Doctor Who television story The Creature from the Pit. He also voiced the Doctor in the Big Finish Doctor Who Unbound stories Auld Mortality and A Storm of Angels. Aged eighty years when the latter was recorded, he was the oldest actor to play the Doctor in any medium up to that time. His record was broken in 2013 when 88-year-old William Russell voiced the First Doctor in The Light at the End.
He was the longtime partner of fellow Doctor Who guest star Alan Rowe. He is perhaps best remembered as the title character in the ITV series Catweazle (1970-71), and as the Crowman opposite Jon Pertwee in the ITV series Worzel Gummidge (1979-1981).
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