James
Sterling Ainsworth
Mr. Brindley
Judge
Augustus Deverell (1 episode)
Lord Pearson (1 episode)
Bret Renssalaer (13 episodes)
Edkuard Shevardnadze
The Man Who Has Failed
City Banker
George
Mr Armstrong
Lord Curzon (1 episode)
Oliver Lacon (6 episodes)
Sir Stuart Ross
Alec Marriott
Clive Seymour (6 episodes)
Warren
Capt. Bate
Headmaster
Roland Jeffries
Warren (1 episode)
Roland Jeffries (1 episode)
Oliver Lacon (7 episodes)
David Rockwell (3 episodes)
Sir Robert Haines (1 episode)
Golombek (1 episode)
Dr. Dorn
Doctor Livesey
Kim Philby
Fenwick
Roger Truscott
Roger Truscott (1 episode)
Dr Raeburn
Doctor Borden
Marcus Brutus (3 episodes)
Oliver Forsyth
Creon (1 episode)
Dr. Yevgeny Dorn (1 episode)
Harry Fletcher (1 episode)
Dr. Halliday Sutherland
Sir Brian de Bois Guilbert (10 episodes)
Charles Ian Grady (1 episode)
Tom Kelly (1 episode)
Pederson (1 episode)
Insp. Javert (10 episodes)
Barry (1 episode)
Frederick Myers (1 episode)
General
Doctor Kirk (1 episode)
Lieutenant Commander Jim Matthews
Ralph Longman
Trevor Graham
George Newman (1 episode)
Ray Underwood
Sergeant Reeves
Garfield (1 episode)
Serge Laurière (1 episode)
Larry Argent
Earle (1 episode)
Harry Black (1 episode)
AA Patrol Man (uncredited)
Detective (uncredited)
Driver
Policeman
Soldier (uncredited)
PC Bert Scott (1 episode)
PC Downing (1 episode)
Ambulance Man