James Mason

Richard Francis Heritage

Acting

Joyce Howard

Laura Verity

Acting

Tom Walls

Christopher Child

Acting

Phyllis Stanley

Lily Bernard

Acting

Edward Rigby

Mansel

Acting

Ronald Ward

Carter

Acting

David Farrar

Commander Lippinscott

Acting

Karl Stepanek

Riccardo

Acting

Betty Warren

Fay

Acting

Walter Crisham

Charlie

Acting

Jeanne De Casalis

Lady with Dog

Acting

Patricia Medina

Mary, Manicurist (as Pat Medina)

Acting

George Robey

Pawnbroker

Acting

Ronald Chesney

Max - Mouth Harmonica Player

Writing

Peggy Dexter

Bobby

Acting

Finlay Currie

Merchant Captain

Acting

Brefni O'Rorke

Detective Inspector Burrows

Acting

Eric Mason

Benson - Illusionist

Acting

Anthony Holles

Hotel Hairdresser

Acting

Ian Fleming

Acting

Kynaston Reeves

Naval Officer in Charge of Court Martial

Acting

Herbert Lomas

Van Driver

Acting

Percy Walsh

Police Sergeant

Acting

Terence de Marney

Code Expert

Acting

Elizabeth Flatau

Acting

Charles Victor

Pub Owner

Acting

Robert Sansom

Petty Officer Bill Grant

Acting

Alvar Liddell

Boothby - Radio Announcer

Acting

Anthony Dawson

2nd Code Expert

Acting

Alf Goddard

One of Mansel's Tough Friends (uncredited)

Acting

David Keir

Henry (uncredited)

Acting

Jack Melford

Defence Lawyer at Court Martial (uncredited)

Acting

Hay Petrie

Waiter (uncredited)

Acting

Leonard Sharp

Bus Conductor (uncredited)

Acting

Dennis Wyndham

George the Barman (uncredited)

Acting