Terence Bayler appeared in two Doctor Who stories.
In 1966 he played Yendom, one of the Monoids' slaves, in the First Doctor story The Ark. In 1969 he returned to the series playing Major Barrington, an officer in the British Army, in the final Second Doctor story, The War Games. Bayler was born in New Zealand, where he first trained as an actor, appearing the 1952 film Broken Barrier, playing a young journalist who falls in love with a Maori woman.
After moving to the UK he made regular appearances on British Television appearing in Hamlet, Moonstrike, Compact, Maigret, Ivanhoe, The Brothers, Upstairs, Downstairs, The Hunchback of Notre Dame, The Squad, London's Burning, The Bill and Dangerfield.
In 1971 he needed stitches above an eye after he was injured in a sword fight while the shooting Roman Polanski's 1971 film of Shakespeare's Macbeth where he played Macduff. Terence Bayler had a long association with the Monty Python team, appearing in Eric Idle's BBC TV seriesRutland Weekend Television as well as in The Rutles, All You Need Is Cash and in the play Pass The Butler. He appeared in two Terry Gilliam films, Time Bandits and Brazil. He had a small but memorable role in the file The Life of Brian declaring I’m Brian and so’s my wife.
In later years he played the Bloody Baron in the Harry Potter films.