Fiona Richmond

as Fiona

Donald Sumpter

as Mark

Anthony Steel

as Robert

Victor Spinetti

as Duncan

Ronald Fraser

as Marty

Joan Benham

as Norma Blackhurst

Graham Crowden

as Lord Yardarm

Graham Stark

as Inspector Flaubert

Percy Herbert

as Hubert

John Hamill

as Daniel

Harry H. Corbett

as Art

John Clive

as Willi

Eddie O'Dea

as Buddy

Linda Regan

as Secretary

Heather Deeley

as Assistant

Helli Louise

as Third 'Men Only' Girl (uncredited)

Patricia Bourdrel

as Madeleine