| Person | Type | Job | Role(s) |
|---|---|---|---|
 Anatole de Grunwald | Crew | Writing | Screenplay |
 Anthony Asquith | Crew | Directing | Director |
 Charles Williams | Crew | Sound | Music |
Edward Black | Crew | Production | Producer |
Geoffrey Kerr | Crew | Writing | Theatre Play |
 J.O.C. Orton | Crew | Writing | Screenplay |
Jack E. Cox | Crew | Camera | Director of Photography |
Louis Levy | Crew | Sound | Music |
R. E. Dearing | Crew | Editing | Editor |
 Alastair Sim | Cast | Actor | Charles Dimble |
 Arthur Hambling | Cast | Actor | Scotland Yard Inspector (uncredited) |
 Ben Williams | Cast | Actor | Scottish Fisherman (uncredited) |
 Brefni O'Rorke | Cast | Actor | Scottish Police Inspector (uncredited) |
 Carla Lehmann | Cast | Actress | Helen Barrington (as Carla Lehman) |
 Catherine Lacey | Cast | Actress | Mrs. Stokes |
Charles Rolfe | Cast | Actor | German Agent (uncredited) |
 Frank Cellier | Cast | Actor | John Forest |
 George Cole | Cast | Actor | Ronald |
 Hay Petrie | Cast | Actor | Dr. Truscott |
 Jeanne De Casalis | Cast | Actress | Mrs. Barrington |
 John Mills | Cast | Actor | Flt·Lieut. Perry |
 Leslie Banks | Cast | Actor | John Barrington |
 Michael Wilding | Cast | Actor | Alan Trently |
 Muriel Aked | Cast | Actress | Miss Fernery |
 Muriel George | Cast | Actress | Mrs. Trimm |
 Peter Gawthorne | Cast | Actor | Senior RAF Officer (uncredited) |
 Roddy Hughes | Cast | Actor | German Agent (uncredited) |
Sydney King | Cast | Ministry Official (uncredited) | |
 Sydney Tafler | Cast | Actor | RAF Officer (uncredited) |
 Wally Patch | Cast | Actor | Evans |
Annie Esmond | Cast | Actress | Lady Wrapping Parcels For The Bazaar (uncredited) |
| Person | Type | Job | Role(s) |
