Dirk Bogarde

Character: Melville Farr

Sylvia Syms

Character: Laura Farr

Dennis Price

Character: Calloway

Anthony Nicholls

Character: Lord Charles Fullbrook

Peter Copley

Character: Paul Mandrake

Norman Bird

Character: Harold Doe

Peter McEnery

Character: Jack Barrett

Donald Churchill

Character: Eddy Stone

Derren Nesbitt

Character: Sandy

John Barrie

Character: Inspector Harris

John Cairney

Character: Bridie

Alan MacNaughtan

Character: Scott Hankin

Nigel Stock

Character: Phip

Frank Pettitt

Character: Barman (as Frank Pettit)

Mavis Villiers

Character: Madge

Charles Lloyd Pack

Character: Henry

Hilton Edwards

Character: P.H.

Margaret Diamond

Character: Miss Benham

David Evans

Character: Mickey

Noel Howlett

Character: Patterson

Alan Howard

Character: Frank

Dawn Beret

Character: Sylvie

Frank Thornton

Character: George - Henry's Assistant (uncredited)

John Bennett

Character: Undercover Detective (uncredited)

Basil Dignam

Character: Barrister (uncredited)

Jim Brady

Character: Transport Cafe Patron (uncredited)

Jack Taylor

Character: Building Site Foreman (uncredited)

Nora Gordon

Character: Farr's Housekeeper (uncredited)