(1 episode)

The Bishop

Dr. Abbott (1 episode)

(1 episode)

Colonel Ross

Hinchcliffe (1 episode)

Sir Horatio Manners (23 episodes)

(2 episodes)

Basil Stewart (1 episode)

Von Moltke (1 episode)

Dr. Lucas

(1 episode)

Dr. Chisolm (2 episodes)

The Hon. Mr. Justice Yearsley (3 episodes)

Mr. Justice Yearsley (3 episodes)

Charles Merrow (1 episode)

Charles Merrow

Oxted

Prince Vasili Kuragin

Vasili Kuragin (4 episodes)

Brigadier (1 episode)

(1 episode)

Captain (1 episode)

Doctor (uncredited)

Hunter

Hacker

Frank Houghton (1 episode)

Wolf Eisen (1 episode)

The Inspector

Charles Baldon

(1 episode)

Oliver Manson

Witness

Dr. Tirpitz

Alec Prosser-Jones

Cedric Gallen

The Stranger

Sandy Warren (26 episodes)

Colonel Gillum (1 episode)

Major Andrew Carlyle (1 episode)

Inspector (1 episode)

Marshal (1 episode)

Carter (1 episode)

(1 episode)

Major Edwards (1 episode)

Mr. Arditti

Salesman

Derreck Alwyn

Peter Naylor (1 episode)

Mortimer Lightwood (8 episodes)