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