Jacoby Wace (unknown episodes)
Dr. Charlie Bradfield / ... (82 episodes, 2004-2010)
Dr. Malcolm Nicholson (30 episodes, 2000-2005)
Howard Clegg (6 episodes, 1996)
Wolland (2 episodes, 1991)
Bert Ostler / ... (2 episodes, 1988-1992)
Dr. Bize / ... (2 episodes, 1988-1990)
Graham Copley / ... (5 episodes, 1995-2004)
Charlie Dawson (unknown episodes, 1986)
Sergeant Calder 2 episodes, 1984