Trebonius
Hotel Manager (uncredited)
Dr. Surtees
Dr. Fiske
Philippe
Thomas
Mr. Frye - School Principal
Detective
Mr. Medbourne
Hotel Waiter (uncredited)
C.I.C. (uncredited)
Elderly Man (uncredited)
Old Home Guardsman (uncredited)
Jeffries
Gen. Woodbury
Doctor
Aide
Inspector Pierce
Stuart
British TV Commentator (uncredited)
Switchman
Philip Tarry
Commander Baddeley
Doctor (uncredited)
Pudens
Alf
Detective Smith (Uncredited)
Cutter
Sgt. Harry Cross
Sir Graham Forbes
Gerald Falconer
Capt. Wilson
Joe Sleat
Duke
Roland
Himself
Stansfield Yorke
Atherley Armitage
David
Filbert Frayne
Jim Hanley
Capt. Roger Peel
Detective Inspector Girton
Dr. Lettering
Stuart Frye
Edmund Streller
Chief Constable
Testing Official
J.B. Cato
Police Sergeant
Diner in Nightclub Scene (uncredited)
Customs Officer (uncredited)
Vicar (uncredited)
Davis the Chauffeur (uncredited)
Managing Director
Butler
Officer
George Baxter
Reynolds (uncredited)
Charles - Butler
Julian Morley
Policeman
Old Man (scenes deleted)