Dirk Bogarde

Character: Sebastian

Susannah York

Character: Rebecca Howard

Lilli Palmer

Character: Elsa Shahn

John Gielgud

Character: Head of Intelligence

Janet Munro

Character: Carol Fancy

Ronald Fraser

Character: Toby

Margaret Johnston

Character: Miss Elliott

Nigel Davenport

Character: Gen. Phillips

John Ronane

Character: Jameson

Hayward Morse

Character: Gavin

Donald Sutherland

Character: Ackerman

Ann Beach

Character: Pamela

Susan Whitman

Character: Tilly

Ann Sidney

Character: Naomi

Veronica Clifford

Character: Ginny

Louise Purnell

Character: Thelma

Portland Mason

Character: 'UG' Girl

James Belchamber

Character: Man with Dog

Charles Farrell

Character: Taxi Driver

Charles Lloyd Pack

Character: Chess Player

Alan Freeman

Character: TV Disc Jockey

Jeanne Roland

Character: Randy

Lynn Pinkney

Character: Joan

Sally Douglas

Character: Uncredited

Stuart Hoyle

Character: Uncredited