Cast & crew
Soho Conspiracy (1950)
Directed by Cecil H. Williamson
Cast
| Annette D. Simmonds | Draper |
| Ian Colin | Archibald Cummings |
| Rita Birkett | Malaspina |
| Charles Road Night | Preston |
| David Hurst | Franco |
| John Norman Evans | Marchant |
| Diana Chesney | Rosa |
| Francis P. Blake | Crossman |
| Duggie Ascot | Chef |
| Beniamino Gigli | Gigli |
| Tito Schipa | Tito Suarez |
| Gino Bechi | Gino |
| Maria Caniglia | Maria Schneider |
| John Witty | Van Guy |
| Syd Harrison | Napoleon |
| Zena Marshall | Scala |
| Jacques Labrecque | Scala |
| Peter Gawthorne | Jenny's Father |
| Max Harrison | Tiberius Caesar |
| Tito Gobbi | Gobbi |
| Noel Coleman | Tax |
| Arthur Lovegrove | Tax |
| Vi Kaley | Cleaner |
Crew
| Mario Monicelli | Original Story |
| Joy Brewer | Makeup Artist |
| Cecil H. Williamson | Art Direction |
| Steno | Original Story |
| Cecil H. Williamson | Adaptation |
| Golda Offenheim | Continuity |
| Ralph Dawson | Adaptation |
| Cecil H. Williamson | Director |
| Felice Montagnini | Original Music Composer |
| R.C. Huggins | Production Manager |
| Vera Brookes | Sound Recordist |
| Edwin J. Fancey | Producer |