Discover
Cecil Parker
Professor Canford
George Cole
'Flash' Harry Cuthbert Edwards
Joyce Grenfell
Sergeant Ruby Gates
Eric Barker
Culpepper-Brown
Thorley Walters
Butters
Irene Handl
Miss Harker-Parker
Dennis Price
Gore Blackwood
Sid James
Alphonse O'Reilly
Julie Alexander
Rosalie Dawn
Lloyd Lamble
Superintendent Samuel Kemp-Bird
Raymond Huntley
Judge Slender
Nicholas Phipps
Major Hargreaves
Lisa Lee
Miss Brenner
John Le Mesurier
Minister of Education
George Benson
Defence Counsel
Elwyn Brook-Jones
Emir
Basil Dignam
Army Officer
Cyril Chamberlain
Army Captain
Michael Ripper
Liftman
Mark Dignam
Prosecuting Counsel
Monte Landis
Octavius
Warren Mitchell
Tailor
Clive Morton
V.I.P.
Wensley Pithey
Chief Constable
Liz Fraser
WPC Susan Partridge
Bill Shine
Usher
Edina Ronay
Lavinia (uncredited)
Erica Rogers
Bobbie (uncredited)
Directing
Frank Launder
Director
Directing
Frank Launder
Director