Richard Basehart as Joe Blake

Simone Simon as Michele Blanchard

Josephine Griffin as Toni Howard

Laurence Naismith as Kurt Vorn

Sid James as Barney West

George Baker as Steven Marlow

Beryl Reid as Beryl

Shani Wallis as Shirley

Dennis Lotis as Ronnie Baker

Philip Ray as Mr. Bliss

Olga Lindo as Mrs. Bliss

Jill Bennett as Susan

John Humphrey as Guy

Joan Hickson as Mrs. West

David Hannaford as Buster West

Colin Gordon as Sir George

Bryan Forbes as Harry

Charles Victor as Bert

Patrick Cargill as Cashier

Frank Williams as Sid

Glenda Jackson as Extra (uncredited)