Cast

Alec Guinness

Professor Marcus

Cecil Parker

Claude, alias 'Major Courtney'

Herbert Lom

Louis, alias 'Mr. Harvey'

Peter Sellers

Harry, alias 'Mr. Robinson'

Danny Green

'One-Round', alias 'Mr. Lawson'

Katie Johnson

Mrs. Wilberforce

Jack Warner

The Superintendent

Philip Stainton

The Sergeant

Frankie Howerd

The Barrow Boy

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Madge Brindley

Large Lady (uncredited)

Crew

William Rose

Screenplay (Writing)

Otto Heller

Director of Photography (Camera)

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Jack Harris

Editor (Editing)

Alexander Mackendrick

Director (Directing)

Michael Balcon

Producer (Production)

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Jimmy O'Connor

Screenplay (Writing)

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Sydney Pearson

Special Effects (Crew)

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Dock Mathieson

Music Director (Sound)

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Hal Mason

Production Supervisor (Production)

Tom Pevsner

Assistant Director (Directing)