- Unknown:
- Roland Pertwee
- Unknown:
- Harold Dearden
- Broadcasting By:
- Mollie Greenhalgh
- Produced By:
- Cleland Finn
- Douglas Helder:
- Douglas Storm
- First Press man:
- Stanley McKenzie
- Second Press man:
- Peter Hoar
- Childers the butler:
- Harold Dill
- Sir John Martay M D:
- Anthony Hawtrey
- Barbara Sir John's niece:
- Gabrielle Blunt
- Lady Marlay (Fa ith):
- Angela Baddeley
- Philip Voaze:
- Frank Pettingell
- Deborah Kane:
- Vivienne Chatterton
- Fred, a hall porter:
- Michael Harding
- Inspector Haines:
- Charles Lefeaux
- P C Cleaver:
- Stanley Groome
- Doctor Puttock:
- Martin Lewis
- Florence Rooke:
- Noel Hood
