Muir had small parts in various television programmes including
The Bill,
Thieftakers,
Cracker,
Jo Brand and
Our Friends in the North. He appeared in films such as
Accidental Death of an Anarchist (1983), a small film called
Representative Radio in which he played the role of Joseph Goddard and
The One And Only in which he played a surgeon (2002). From 21 September 1990 to 5 January 1991 he played the role of an English jockey in the farce
Tiercé Gagnant at the 700 seat
Théâtre de la Michodière in Paris. The original play,
Dry Rot, by
John Chapman, featured a French jockey. The adaptation and transposition of the play to France, by Stewart Vaughan and Jean-Claude Islert, required that the nationality of the jockey be reversed. The play was directed by
Christopher Renshaw. Muir worked for
BBC Radio for many years. He appears as the voice of Rosencrantz in Shakespeare's
Hamlet and was the voice of Blacksmith in a TV series called
animated tales of the world, in 2000. His theatre work include many years working for such establishments such as
Regent's Park Open Air Theatre and The
Royal Shakespeare Company. He was an early member of the singing group
The Flying Pickets. ==Filmography==