- The Police Sergeant carrying out an eviction order at a gypsy encampment in October 1970
- Talent scout Bob Maskell in May 1974
- Eric Firman, owner of frozen food chain Firman's Freezers, who appeared intermittently between January 1994 and August 1998.
Prior to going to drama school, Malcolm was a trainee reporter on the Sunderland Echo, the town's evening paper. Upon graduating he appeared regularly on television in programmes such as Man at the Top, Thriller, Warship, When the Boat Comes In, Doctor Who, Z Cars, Cover, Reilly: Ace of Spies, Juliet Bravo, The Life and Loves of a She-Devil, Our Friends in the North, Casualty, Agatha Christie's Poirot, Emmerdale, Holby City and Doctors. On stage he played several Shakespearean roles in performances of Othello and Hamlet while in the cinema he featured in Bounty, Chaplin and Scandal.