Captain
Jekyll's Father
Laurence
Jarvis Huntley-Pike
Mr. Snoddy
Shorty
Gower (voice)
Bertie Hargreaves
Bernard Wilsher
Colonel Zapt
Kraftstein
Insp. Willoughby
Grandpa
Solicitor
Randomhouse
Grandpa Potts
King Pellinore
Sir Charles Dillworthy
Parker
Stanley Farquhar
Inspector Hobart
Sergeant-Major McGregor
Captain Rhumstone
Joseph Cavor
Colonel Judd
Ezra
Inspector Fred 'Nosey' Parker
Inspector Oliphant
Gunner Evans
Luke Billings
Monsieur Brun
Chief P.O. Sidney Crout
Det. Sgt. Thompson
John Sholto Douglas, Marquis of Queensberry
Genie
Ian Howard
Gregory Mason
Dr. Goovaerts
Bertie
Pet Shop Owner (uncredited)
Walter Froy
Steady Barker
Harry, the Tourist
Interrogator
Major Proudfoot
Steady Barker
Colonel (Medical Officer)
Garrod
Joe Mangan
Geoffrey Windsor
Elvin Main
Dr. Hatchett
Monkton
Dr. Peyron
Man in Pub
Bert Benton
Wilson
Maitre D', Hotel
Harry Tyler
Martin Bremner
Mr. Frobisher
