- William Eythe
- Charles Morton
- Stanley Holloway
- Emile Pollet
- Hazel Court
- Gabrielle Vermorel ('and introducing Hazel Court')
- George Thorpe
- Sen. Philipe Renault
- Irene Browne
- Mme. Renault
- Beatrice Campbell
- Margot
- Basil Sydney
- Georges Vermorel
- Margaret Rutherford
- Madame Vernorel
- Ada Reeve
- Mathilde - the Concierge
- Graeme Muir
- Count de Brissac
- Wilfrid Hyde-White
- Garin - News Editor
- John Ruddock
- Doctor
- O.B. Clarence
- Ambassador
- Aubrey Mallalieu
- Prefect of Police
- James Harcourt
- Henri - the Butler
- Charles Victor
- 1st Client
- John Salew
- 2nd Client
- Percy Walsh
- Shooting Gallery Man
- Hy Hazell
- 1st Girl in Restaurant
- Joan Seton
- Vermorel's Secretary
- Katie Johnson
- Henriette - Mme. Vermorel's Housekeeper
- Diana Decker
- 2nd Girl in Restaurant
- Lind Joyce
- Yvonne Jadin - Singer
- John Bentley
- Customer in Café
- Anthony Dawson
- First Duelling Opponent
- Shelagh Fraser
- Minor Role
- Charles Hawtrey
- Reporter at the Fair
- Jack Lambert
- Minor Role
- Guy Rolfe
- Ambassador's Friend