Stanley Baker as John Craig

Geraldine Chaplin as Miriam Loman

Donald Pleasence as Loomis

Dana Andrews as Blake

Warren Mitchell as Omar

Sue Lloyd as Joanna Benson

Derren Nesbitt as Andrew Joyce

Cec Linder as Mankowitz

Vladek Sheybal as Aaron Kaplan

Ferdy Mayne as Marcus Kaplan

Clifton Jones as Hetherton

John Collin as Asimov

Aharon Ipalé as Gabrilovitch

Howard Goorney as Zimmer

Michael Poole as Zhelkov

J.G. Devlin as Waiter

Frank Maher as Daniel

Cliff Diggins as Harry Bigelow

Yuri Borienko as Guard

Tom Bowman as Guard

Rick Lester as Prison Camp Guard (uncredited)

Victor Harrington as Club Member (uncredited)

Phillip Stewart as Club Member (uncredited)

Dinny Powell as KGB Gunman (uncredited)