Geoffrey Bayldon is a British actor. After playing roles in many dramas including Shakespeare, he became known for portraying the title role of the children's series Catweazle, after turning down the opportunity to play both the First and Second Doctors in the long-running BBC science fiction television series Doctor Who. Bayldon's other long-running parts include the Crowman in Worzel Gummidge and Magic Grandad in the BBC television series Watch.
Bayldon made several film appearances in the 1960s and 1970s, including King Rat, To Sir, with Love, Casino Royale, the Envy segment of The Magnificent Seven Deadly Sins, the Marc Bolan/T. Rex film Born To Boogie and the film version of the television series Porridge as the Governor.
Among his more recent television appearances was the Five game show Fort Boyard.
He also had a guest appearance in Doctor Who as Organon in The Creature from the Pit. More recently, he has played an alternative First Doctor in two audio plays based on the Doctor Who television series by Big Finish Productions in the Doctor Who Unbound series: Auld Mortality and A Storm of Angels.