Benny Hill
Hugo Dill
Belinda Lee
Frankie Mayne
David Kossoff
Zacco
Garry Marsh
Det. Inp. Hancock
Denis Shaw
Professor Stumpf
Ernest Thesiger
Sir Walter
George Margo
Barakov
Frederick Schiller
Gruber
Thorley Walters
Raymond Courtney
Stratford Johns
PC Coleman
Warwick Ashton
PC Roberts
Norah Blaney
The Actress
Charles Hawtrey
Disc Jockey
Nicholas Phipps
Scientist
Peter Bull
Scientist
Gibb McLaughlin
Scientist
Ernest Jay
Scientist
Harold Scott
Scientist
Terence Alexander
Radio Show Official (uncredited)
Irene Handl
Customer (uncredited)
Arthur Lowe
Shop demonstrator (uncredited)
Glyn Houston
Arresting Policeman (uncredited)
Jeremy Hawk
Himself
Philip Stainton
Frankie's Agent
Directing
Basil Dearden
Director
David Tringham
Third Assistant Director
Tom Pevsner
Assistant Director
Jean Graham
Continuity
Writing
Production
Michael Balcon
Executive Producer
Basil Dearden
Co-Producer
Michael Relph
Producer
Hal Mason
Production Supervisor
David Peers
Unit Production Manager
Crew
Sound
Philip Green
Original Music Composer
Stephen Dalby
Sound Supervisor
Alastair McIntyre
Sound Editor
Leo Wilkins
Sound Recordist
Dock Mathieson
Conductor