On screen
Cast
25 credited performers
Bernard Lee
Henry Houghton
William Sylvester
Gordon Lonsdale
Margaret Tyzack
Elizabeth Gee
David Kossoff
Peter Kroger
Nancy Nevinson
Helen Kroger
Thorley Walters
Cmdr. Winters
Artwork unavailable
Gillian Lewis
Marjorie Shaw
Artwork unavailable
Newton Blick
P.O. Meadows
Philip Latham
Captain Ray
Cyril Chamberlain
Anderson
Artwork unavailable
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)
Artwork unavailable
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)
Artwork unavailable
Edwin Apps
Blake (uncredited)
Fred Griffiths
News Vendor (uncredited)
Artwork unavailable
Anita West
Tilly (uncredited)