- Unknown:
- Robert Louis Stevenson
- Music By:
- John Hotchkis
- Production By:
- Raymond Raikes
- Played By:
- Cecile Chevreau
- Played By:
- Belle Chrystall
- Played By:
- Geoffrey Hodson.
- Unknown:
- Geoffrey Lumsden
- Unknown:
- Molly Rankin
- Richard Enfield, the well-known man about town:
- Gordon Davies
- Mrs Williams:
- Molly Rankin
- Bessie, her daughter:
- Cecile Chevreau
- Mr Edward Hyde:
- Cyril Shaps
- Mr Utterson, Dr Jekyll's lawyer:
- Richard Williams
- Dr Hastie Lanyon, Dr Jekyll's old friend:
- Manning Wilson
- Poole, Dr Jekyll's butler:
- James Thomason
- Dr Henry Jekyll:
- Cyril Shaps
- Sister Bathurst, the matron of a children's hospital:
- Belle Chrystall
- Police Inspector Newcomen of Scot land Yard:
- George Merritt
- A housemaid:
- Mairhi Russell
- Mr Guest, Mr Utterson's head clerk:
- Simon Lack
- Keable, Dr Lanyon's butler:
- Geoffrey Lumsden
