Michael Caine
Maj. John Tarrant
Donald Pleasence
Cedric Harper
Delphine Seyrig
Ceil Burrows
Clive Revill
Alf Chestermann
Joss Ackland
Chief Supt. Wray
Catherine Schell
Lady Melissa Julyan
Joseph O'Conor
Sir Edward Julyan
Derek Newark
Monitoring Policeman
Edward Hardwicke
Mike McCarthy
Patrick Barr
Gen. St. John
Yves Afonso
Jacques (uncredited)
Del Baker
Shadow (uncredited)
Murray Brown
Doctor (uncredited)
Les Conrad
M15 Man (uncredited)
George Lane Cooper
Pincus (uncredited)
Brenda Cowling
Secretary (uncredited)
Robert Dorning
Jeweller (uncredited)
Roy Everson
M15 Man (uncredited)
Nancy Gabrielle
Manageress (uncredited)
Jill Goldston
Commuter (uncredited)
Charlie Gray
Tourist (uncredited)
Peter Halliday
Customs Officer (uncredited)
