Arthur Winslow
Himself (Uncredited)
Tom Harker
Inspector Alec MacDonald
Fielding
Doctor Johnson
Dr. Marston
Inspector Cabell
Mr. Dunner
Brian Hardison
Major Browne
Commander Cavendish
Charles Stewart
Tom - Friend of Harry's
Horatio
Mr. Ransome
Gordon Lowther
Mr. Mallory
Brian Stern
Captain Engel
British Sergeant Questioning Chapman (uncredited)
Captain Leeds
James MacAfee
Carswell
Vahlin
MacDonald 'Intelligence'
Seaman Edward Birkett
Dr. Thomas Murray
Capt. Jimmy Cairns, M.C. (Battalion Adjutant)
Capt. Jock Bateson
Bill Donovan
Sergeant Malcolm
Sgt. MacKenzie
PC Alec
Sergeant
Roger Fenton
Leading Seaman Johnson
George Campbell
Don Wescot
'Chalky' White
Jimmy Norris
Scottie
Dougal McLean (uncredited)
John Merritt
Carnoustie Bligh
Percy
Percy
District Officer
BBC TV producer
Ted Burns
Peter J. Florian
A Young Actor / Ishmael
Ralph
Hector
British Soldier
Detective Inspector Campbell
Dr. Anson
Paul Tracy
George Campbell
Jock Melville
David Shields
Tom Kennedy
Scotty Duncan
Lt. David Lennox
David Sutton
Messboy John Jamieson - M.V. San Demetrio
Fred Blake
Young 'un
Alastair 'Jock' MacFarlan, 19th Fusillers
(uncredited)