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
Cyril Chamberlain
Anderson
Patrick Barr
Captain Warner
Derek Francis
Chief Supt. Croft
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)
