Lionel Jeffries

as Grandpa Potts

as Bald RADA Student (uncredited)

as Blake

as Dr. Peyron

as Dr. Goovaerts

as Captain Rhumstone

as Fritz

as Joseph Cavor

as Father Borscht

as Charles Radford

Role: Director

as Bill Tongue

as King Pellinore

as Police Insp. Willoughby

as Colonel (Medical Officer)

as Aziz

as Harry Tyler

as Inspector Oliphant

as Chief Prison Officer Sidney Crout

as Percy Broderick

as Harry

as Inspector Fred 'Nosey' Parker

as Monsieur Brun

as Jekyll's Father

as Colonel Zapt

as Lt Graham McDaniel

as Sir Charles Dillworthy

as Marquis of Queensberry

as Kraftstein

as Randomhouse

as Pet Shop Owner (uncredited)

as Joe Mangan

as Solicitor

as Cecil Caine

as Jarvis Huntley-Pike

as Mr. Snoddy

as Dr. Hampton Hatchet

as Interrogator

as Garrod

Role: Writer

as Colonel Judd

as Parker

as Geoffrey Windsor

as Taxi Driver

as Sir Charles

as Ames

as Grandpa

as Cark

as Ian Howard

as Wilson

Role: Director

as Keith

as Sergeant-Major McGregor

as Ezra

as Det. Insp. Hook

as Major Proudfoot

as Man in Pub

as Airport Commander

as George

Role: Director

as Steady Barker

as Steady Barker

as Bertie

as Walter Froy

as Maitre D', Hotel

as Mr. Frobisher

as Luke Billings

as Det. Sgt. Thompson

as Stanley Farquhar

as Martin Bremner

as Bertie Hargreaves

as Bernard Wilsher

as Elvin Main

as Major George Langton

as Laurence

as Self (archive footage)

as Self (uncredited)

as Gower (voice)

as Harry, the Tourist

as Gregory Mason

as Inspector Hobart

as Bert Benton

as Monkton

as Self

as Arkwright

Role: Director

as Genie

as Captain

as Captain

as Gunner Evans

as Houlihan

as Lester Gibbons

as Arthur

as Taxi Driver

as Barman

as Self (archive footage)