Leslie Clark appeared on Coronation Street in three roles:
- A fairground barker in August 1961
- A man on a bus in November 1967
- A spoons player at a Lancashire night held in the Rovers in May 1978.
His other credits include roles in Yorky, Here's Harry, The Villains, The Liars, The Man in Room 17, Doctor Who, Vendetta, The Dustbinmen, Brensham People, Leave It to Charlie, Cribb, Blake's 7, A Kind of Loving and All for Love.
Film credits include The Italian Job, Carry on Henry, The Fast Kill and Burning an Illusion.