Will Hay
William Potts / Muller
Acting
Frank Pettingell
Professor Hoffman
Acting
Julien Mitchell
General Von Glotz
Acting
Charles Hawtrey
Max
Acting
Barry Morse
Kurt
Acting
Peter Ustinov
Krauss
Acting
Peter Croft
Hans
Acting
Anne Firth
Lena
Acting
Leslie Harcourt
Vogel
Acting
Jeremy Hawk
A.D.C.
Acting
Raymond Lovell
Schmidt
Acting
Aubrey Mallalieu
Rector
Acting
John Williams
Maj. Bishop
Acting
Lawrence O'Madden
Col. Truscott
Acting
John Boxer
British Pilot
Acting
Clifford Buckton
MI5 Man (uncredited)
Acting
Arthur Denton
Detective Carter (uncredited)
Acting
Leslie Dwyer
German Soldier on Train
Acting
Richard George
German Pilot
Acting
Walter Gotell
SS Guard
Acting
William Hartnell
German Officer at Station
Acting
Bryan Herbert
Airport Official
Acting
Vincent Holman
Member of the General Staff
Acting
Charles Paton
Passenger Arrested on Train
Acting
Lloyd Pearson
Train Passenger
Acting
Johnnie Schofield
1st Observer (uncredited)
Acting
Harry Terry
SS Guard (uncredited)
Acting
Jack Vyvyan
Detective Evans (uncredited)
Acting
H Victor Weske
SS Officer on Train (uncredited)
Acting