Terry-Thomas
Capt. Romney Carlton-Ricketts
Joyce Grenfell
Sgt. Ruby Gates
Alastair Sim
Miss Amelia Fritton
Lionel Jeffries
Joe Mangan
Lloyd Lamble
Superintendent Samuel Kemp-Bird
Raymond Rollett
Chief Constable
Terry Scott
Police Sergeant
Ferdy Mayne
Italian Police Inspector
Thorley Walters
Major Whitehart
Michael Ripper
Eric - The Liftman
Cyril Chamberlain
Army Captain
Judith Furse
Dame Maud Hackshaw
Kenneth Griffith
Charlie Bull
Richard Wattis
Manton Bassett
Guido Lorraine
Prince Bruno
Alma Taylor
Prince Bruno's Mother
Charles Lloyd Pack
Henry Roberts - Prison Governor
Eric Barker
Culpepper Brown
Vikki Hammond
Jane Osborne
Lesley Scoble
Schoolgirl (uncredited)
Angela White
Schoolgirl (uncredited)
Carol White
Schoolgirl (uncredited)