| Person | Type | Job | Role(s) |
|---|---|---|---|
 Anne V. Coates | Crew | Editing | Editor |
 Harold French | Crew | Directing | Director |
 Sydney Box | Crew | Writing | Screenplay, Producer |
 Arnold Diamond | Cast | Actor | French Customs Officer |
 Ballard Berkeley | Cast | Actor | Cooper |
 Brian Wilde | Cast | Actor | Smuggler at Airfield |
Campbell Gray | Cast | Actor | Luigi |
 Campbell Singer | Cast | Actor | Sergeant Dodson, River Police |
 Cyril Chamberlain | Cast | Actor | Customs Officer |
David Davies | Cast | Actor | (uncredited) |
Denis Shaw | Cast | Actor | Ship's Cook |
 Douglas Ives | Cast | Seaman | |
 Elizabeth Sellars | Cast | Actress | Rita Compton |
 Eric Pohlmann | Cast | Actor | Steven Lasovich |
 Greta Gynt | Cast | Actress | Mme. Simonetta |
 Hal Osmond | Cast | Actor | Baggage Room Clerk |
Hamilton Keene | Cast | Actor | Cop at London Airport |
Herbert C. Walton | Cast | Old Man in Dungarees | |
 Jack Warner | Cast | Actor | Maj. Alec White |
 Jacques Brunius | Cast | Actor | Det. Pierre Valance |
 Jill Adams | Cast | Actress | Michael's Dance Partner (uncredited) |
Joan Winmill Brown | Cast | W.S.O. | |
 John Arnatt | Cast | Actor | Customs Officer (uncredited) |
 John Horsley | Cast | Actor | Customs Officer |
 John Singer | Cast | Actor | Seaman |
 Joyce Grenfell | Cast | Actress | Lady Flavia Queensway |
 Lloyd Lamble | Cast | Actor | Captain of Python |
 Martin Boddey | Cast | Actor | Sub-Director Holt |
 Michael Hordern | Cast | Actor | Director of Customs |
 Nicholas Phipps | Cast | Actor | Royal Navy Information Officer |
 Nigel Patrick | Cast | Actor | Insp. Michael Kenyon |
Philip Dale | Cast | A.P.O. | |
 Philip Stainton | Cast | Actor | Seaburyness Police Sergeant |
 Robin Hunter | Cast | Actor | A.P.O. |
 Ronald Adam | Cast | Actor | Mr. Bennett |
 Terence Longdon | Cast | Actor | A.P.O. at Customs Launch |
 Terence Morgan | Cast | Actor | Roger Compton |
 Theodore Bikel | Cast | Actor | Max |
 Tom Gill | Cast | Actor | Montana Hotel Receptionist |
George Hilsdon | Cast | Actor | Police Driver (uncredited) |
 Jacques Cey | Cast | Actor | Little Frenchman |
Guy De Monceau | Cast | Head Waiter (uncredited) | |
James Gilbert | Cast | Agent Larkins | |
| Person | Type | Job | Role(s) |
