Reparto
Heather Thatcher
Lady Maslam
Jerry Verno
Taxi Driver (uncredited)
Dirk Bogarde
Charles Prohack
Hermione Baddeley
Eve Prohack
Glynis Johns
Mimi Warburton
James Hayter
Carrell Quire
Frederick Leister
The Director General
Russell Waters
Cartwright
Sheila Sim
Mary Prohack
Bryan Forbes
Tony
Frederick Valk
Dr. Viega
Judith Furse
Laura Postern
Jon Pertwee
Plover
Ada Reeve
Mrs. Griggs
Ian Carmichael
Hat Salesman (uncredited)
Cecil Parker
Arthur Prohack
Denholm Elliott
Oswald Morfrey
Henry Edwards
Sir Digby Bunce