Tony Block

Peter Weiss

Wyant Bridge (3 episodes)

CC Lowsley (14 episodes)

Self - Participant (1 episode)

Major Ted Huxby (1 episode)

Michael Blore

Charles Darwin

Professor Chessman

John Green / Marcus Knight (1 episode)

Robert Twyman (1 episode)

Dr Choake (9 episodes)

(1 episode)

Ernie Rayner (3 episodes)

Cannon John Jeffrey

Simon Snell

Jones

Mike Spicer (1 episode)

Hamish Rafferty (1 episode)

Dr. Gordon Ormerod (87 episodes)

Arthur

(6 episodes)

Dick Thompson (3 episodes)

Dr. Gordon Omerod (1 episode)

Anthony Mottram (1 episode)

Oscar Mansfield

Carver (1 episode)

Peter Robson

Sam (18 episodes)

Sam

(1 episode)

(22 episodes)

Stevens (1 episode)

Simon Eastman (10 episodes)

Hugh Blakeley (1 episode)

Mark (1 episode)

Piggy Garstone (4 episodes)

Tuppy Glossop (8 episodes)

(1 episode)

Roger (1 episode)

Kidder

Septimus Warren-Smith (1 episode)

Adrian Vowchurch

Vicar (1 episode)

John Dunbar

Barman (1 episode)

Hubert de Giscard (2 episodes)

(7 episodes)