Geoffrey Richter-Douglas

Michael York

Acting

Erika Altschul

Elke Sommer

Acting

Major Tauntler

Peter Carsten

Acting

Professor Christian Altschul

Marius Goring

Acting

Colonel Hirsch

Anton Diffring

Acting

Von Gorian

Andrew Keir

Acting

Captain Whitney

Rupert Davies

Acting

Stephanie

Alexandra Stewart

Acting

Anderson

William Marlowe

Acting

Brandner

Alan Rothwell

Acting

Blinker Hall

Richard Hurndall

Acting

Meier

John Gill

Acting

Cockney Sergeant

Michael Robbins

Acting

Jamie Fergusson

Ben Howard

Acting

German Officer

George Mikell

Acting

Major Proudfoot

Arnold Diamond

Acting

Lord Delford

Clive Morton

Acting

Colonel Whippen

Bryan Coleman

Acting

Harlich

Gary Waldhorn

Acting

Prime Minister

Ronald Adam

Acting

Radio Operator

Frazer Hines

Acting

Mrs. Parker

Ruth Kettlewell

Acting

Sgt. Grant

Ray Lonnen

Acting

Child (uncredited)

Dorian Healy

Acting