David Niven

Character: Roger Tweakham

Geneviève Page

Character: Genevieve Gerard

Ronald Squire

Character: Marberry

Beatrice Straight

Character: Theora

Wilfrid Hyde-White

Character: Sir Horace Hogg

Howard Marion-Crawford

Character: Baggott

Dorothy Alison

Character: Mrs. Tweakham

Miles Malleson

Character: Mr. Blucher

Richard Wattis

Character: Worthington

Joan Sims

Character: Lady Barber

Irene Handl

Character: Receptionist

Charles Carson

Character: Judge

Harry Locke

Character: Tobacconist

Martin Boddey

Character: Detective

Colin Morris

Character: Detective

Leonard Sharp

Character: Elevator Operator