All Cast

Alec Guinness

Alec Guinness

Professor Marcus

Cecil Parker

Cecil Parker

Claude, alias 'Major Courtney'

Herbert Lom

Herbert Lom

Louis, alias 'Mr. Harvey'

Peter Sellers

Peter Sellers

Harry, alias 'Mr. Robinson'

Danny Green

Danny Green

'One-Round', alias 'Mr. Lawson'

Katie Johnson

Katie Johnson

Mrs. Wilberforce

Jack Warner

Jack Warner

The Superintendent

Philip Stainton

Philip Stainton

The Sergeant

Frankie Howerd

Frankie Howerd

The Barrow Boy

Madge Brindley

Madge Brindley

Large Lady (uncredited)

Hélène Burls

Hélène Burls

Hypatia (uncredited)

Kenneth Connor

Kenneth Connor

Cab Driver (uncredited)

Michael Corcoran

Michael Corcoran

Burglar (uncredited)

Harold Goodwin

Harold Goodwin

Parcels Clerk (uncredited)

Fred Griffiths

Fred Griffiths

Junk Man (uncredited)

Lucy Griffiths

Lucy Griffiths

Miss Pringle (uncredited)

George Hilsdon

George Hilsdon

Security Van Driver (uncredited)

Vincent Holman

Vincent Holman

Station Master (uncredited)

Stratford Johns

Stratford Johns

Security Guard (uncredited)

Sam Kydd

Sam Kydd

Second Cab Driver (uncredited)

Edie Martin

Edie Martin

Lettice (uncredited)

Jack Melford

Jack Melford

Detective (uncredited)

Arthur Mullard

Arthur Mullard

(uncredited)

Ewan Roberts

Ewan Roberts

Constable (uncredited)

George Roderick

George Roderick

Radio Car Policeman (uncredited)

John Rudling

John Rudling

Nervous Man (uncredited)

Leonard Sharp

Leonard Sharp

Pavement Artist (uncredited)

Peter Williams

Peter Williams

Detective at Parcels Office (uncredited)

Neil Wilson

Neil Wilson

Policeman (uncredited)

Phoebe Hodgson

Phoebe Hodgson

Constance (uncredited)