Character Name : Professor Marcus

Original Name : Alec Guinness

Gender : Male

Character Name : Claude, alias 'Major Courtney'

Original Name : Cecil Parker

Gender : Male

Character Name : Louis, alias 'Mr. Harvey'

Original Name : Herbert Lom

Gender : Male

Character Name : Harry, alias 'Mr. Robinson'

Original Name : Peter Sellers

Gender : Male

Character Name : 'One-Round', alias 'Mr. Lawson'

Original Name : Danny Green

Gender : Male

Character Name : Mrs. Wilberforce

Original Name : Katie Johnson

Gender : Female

Character Name : The Superintendent

Original Name : Jack Warner

Gender : Male

Character Name : The Sergeant

Original Name : Philip Stainton

Gender : Male

Character Name : The Barrow Boy

Original Name : Frankie Howerd

Gender : Male

Character Name : Large Lady (uncredited)

Original Name : Madge Brindley

Gender : Female

Character Name : Hypatia (uncredited)

Original Name : Hélène Burls

Gender : Male

Character Name : Cab Driver (uncredited)

Original Name : Kenneth Connor

Gender : Male

Character Name : Burglar (uncredited)

Original Name : Michael Corcoran

Gender : Male

Character Name : Parcels Clerk (uncredited)

Original Name : Harold Goodwin

Gender : Male

Character Name : Junk Man (uncredited)

Original Name : Fred Griffiths

Gender : Male

Character Name : Miss Pringle (uncredited)

Original Name : Lucy Griffiths

Gender : Female

Character Name : Security Van Driver (uncredited)

Original Name : George Hilsdon

Gender : Male

Character Name : Station Master (uncredited)

Original Name : Vincent Holman

Gender : Male

Character Name : Security Guard (uncredited)

Original Name : Stratford Johns

Gender : Male

Character Name : Second Cab Driver (uncredited)

Original Name : Sam Kydd

Gender : Male

Character Name : Lettice (uncredited)

Original Name : Edie Martin

Gender : Female

Character Name : Detective (uncredited)

Original Name : Jack Melford

Gender : Male

Character Name : (uncredited)

Original Name : Arthur Mullard

Gender : Male

Character Name : Constable (uncredited)

Original Name : Ewan Roberts

Gender : Male

Character Name : Radio Car Policeman (uncredited)

Original Name : George Roderick

Gender : Male

Character Name : Nervous Man (uncredited)

Original Name : John Rudling

Gender : Male

Character Name : Pavement Artist (uncredited)

Original Name : Leonard Sharp

Gender : Male

Character Name : Detective at Parcels Office (uncredited)

Original Name : Peter Williams

Gender : Male

Character Name : Policeman (uncredited)

Original Name : Neil Wilson

Gender : Male

Character Name : Constance (uncredited)

Original Name : Phoebe Hodgson

Gender : Male