Allard (2 episodes, 2015)
David Mandel (1 episode, 2003)
Paxton-Marr (3 episodes, 1996)
George Harding / ... (2 episodes, 2000-2002)
Commander George Challenger 1 episode, 1990
Partridge (1 episode, 1986)
Sam Martin (unknown episodes, 1994-1995)
Paul (3 episodes, 1973-1983)
Hospital Manager 1 episode, 2014