- C. Aubrey Smith
- Sir James Collison
- Erich von Stroheim
- Carl Hoffmeyer
- Stephanie Bachelor
- Tony Collison
- Forrester Harvey
- Sam Todworthy
- Doris Lloyd
- Emma Todworthy
- Eva Moore
- Mary Collison
- Richard Fraser
- Inspector Bob Cartwright
- Victor Varconi
- Jules
- Georges Metaxa
- Henri
- Emil Rameau
- Prof. Renault
- Colin Campbell
- Waters
- Frederick Worlock
- Commissioner John Brent
- Harry Allen
- Watchman
- Bunny Beatty
- Girl in Richmond Park
- Billy Bevan
- Porter
- Ted Billings
- Newsboy
- Jean De Briac
- Phillipe
- Cyril Delevanti
- Police Surgeon
- Edythe Elliott
- Bentley
- Frank Hagney
- Constable
- Olaf Hytten
- Purvis
- James Logan
- Constable
- Tarquin Olivier
- Collison's Great-Grandson
- Tom Pilkington
- Dispatcher
- Georges Renavent
- Anton Miran
- Bob Thom
- Taxi Driver
- Eric Wilton
- Inspector
