Bernard Lee

Henry Houghton

William Sylvester

Gordon Lonsdale

Margaret Tyzack

Elizabeth Gee

David Kossoff

Peter Kroger

Nancy Nevinson

Helen Kroger

Thorley Walters

Cmdr. Winters

Gillian Lewis

Marjorie Shaw

Newton Blick

P.O. Meadows

George Pravda

Secondary Supporting Role

Philip Latham

Captain Ray

Cyril Chamberlain

Anderson

Justine Lord

Christina

Patrick Barr

Captain Warner

Derek Francis

Chief Supt. Croft

Hector Ross

Supt. Woods

Paul Eddington

Johnnie (uncredited)

Richard Marner

Colonel Monat (uncredited)

Geoffrey Palmer

Police Officer (uncredited)

Bryan Pringle

Surveillance Man (uncredited)

Andre Mikhelson

Russian Embassy Official (uncredited)

Garry Marsh

First Member at Lords (uncredited)

Basil Dignam

Second Member at Lords (uncredited)

Brian Nissen

Portland Official (uncredited)

Edwin Apps

Blake (uncredited)

Fred Griffiths

News Vendor (uncredited)

Anita West

Tilly (uncredited)

Robert Tronson

Director

Derek Cracknell

Asistente de Dirección

Peter Barnes

Guión

Frank Launder

Guión

Arthur Lavis

Director de Fotografía

Jack Lowin

Camera Operator

Leslie Gilliat

Productor

Mark III Scope Productions

Compañía de Produccion

Triglav Film

Compañía de Produccion

Paramount Pictures

Compañía de Produccion

Paul Sheridan

Casting

Ernest Gasser

Maquilladora

Daphne Vollmer

Hairdresser

Thelma Connell

Editor

Norman G. Arnold

Dirección Artística

Cecil Mason

Sound Recordist