Ian Hendry

Tom Llewellyn

Alan Badel

David Neville

Barbara Ferris

Susan Eliot

Alfred Burke

Colin Webster

Sheila Allen

Diana Looran

Ralph Michael

Minister of Defense

Patrick Wymark

Commander

Martin Miller

Prof. Gruber

Harold Goldblatt

Harib

Patrick White

Mr. Davidson

Andre Mikhelson

Russian Official

Bessie Love

Mrs. Robbin

Clive Powell

Paul

Yoke-Moon Lee

Mi Ling

Roberta Rex

Nina

Gerald del Sol

Ago

Mahdu Mather

Rashid

Frank Summerscale

Mark

Tom Bowman

General Miller (uncredited)

Peter Thompson

(uncredited)

Jack Berg

(uncredited)

Eddie Boyce

(uncredited)

Ian Cullen

(uncredited)

Joe Dunne

(uncredited)

Ernest Fennemore

(uncredited)

Patrick Halpin

(uncredited)

Philip Johns

(uncredited)

Annette Kerr

(uncredited)

Arnold Lee

(uncredited)

Martin Lyder

(uncredited)

Frank Maher

(uncredited)

Terence Maidment

(uncredited)

Richard Marner

(uncredited)

Leo McKern

(uncredited)

Tony O'Leary

(uncredited)

Bill Rayment

(uncredited)

Michael Robbins

(uncredited)