Routledge
Major Anderson
Ponsford 'The Duke'
The Colonel
Paul Marchant
Mr. Finch
Mitchell Gifford
Preston Mitchell (1 episode)
Felix Courtland
Owen Arthur
De Villefort, Prefect of Police
Dr. Matt Adams
Don Rainsford
Dr. David Brent
Reginald Parker / Edward Grey
Sir John Tanley
Aussie Sgt. Cyril North
Tony Lazar
Manning
Preston Drake
George Torrence
Holbrook
Sir Henry Leland
Captain Craig Killian
Carlton De Witt
Elliot Livingston
Paddy Carson
Captain Lionel Channing
Ianto Morgan
Cmdr. Peter Walmsley
Sir John Lasher
Reggie Carstairs
Dr. Charles Clayton
Michael Barclay
Maxwell Archer
Dick Stone
Dr. Paul Raymond
Bordier
Capt. Rufus Grant
Émile Scheffer
Tsar Alexandre II of Russia
David Moore
Lt. Peter Carr
Inspector Jim Grant
Denis Cobtree
Sir Henry Curtis
Derek Cooper
Dick Haslewood
Richard Carter
Captain Wiltshire
John Ryder
Trelawney
John Ridd
Hugh Phillips
Lord Gawthorpe
Gerrit Ammidon
Fergan
Prince Charles
Harry Berne
John Hopkins aka Bimbo
Earl Egbert
Mr. Loder
Franz Shiller
Sam Worthington
George Castle
Fraser-Freer's Younger Brother
Walter Harker
Captain Danforth
Jack Oakhurst
Dr. Price
Carl Weild
Captain Dorchester
Charles
Ashleigh Preston
Hugh Paton
(uncredited)
Lord David Harborough
Oberleutnant von Rohnstedt
Viscount
