Cast
Alec Guinness
Professor Marcus
Cecil Parker
Claude, alias 'Major Courtney'
Herbert Lom
Louis, alias 'Mr. Harvey'
Peter Sellers
Harry, alias 'Mr. Robinson'
Danny Green
'One-Round', alias 'Mr. Lawson'
Katie Johnson
Mrs. Wilberforce
Jack Warner
The Superintendent
Philip Stainton
The Sergeant
Frankie Howerd
The Barrow Boy
MB
Madge Brindley
Large Lady (uncredited)
HB
Hélène Burls
Hypatia (uncredited)
Kenneth Connor
Cab Driver (uncredited)
MC
Michael Corcoran
Burglar (uncredited)
Harold Goodwin
Parcels Clerk (uncredited)
FG
Fred Griffiths
Junk Man (uncredited)
Lucy Griffiths
Miss Pringle (uncredited)
GH
George Hilsdon
Security Van Driver (uncredited)
VH
Vincent Holman
Station Master (uncredited)
Stratford Johns
Security Guard (uncredited)
Sam Kydd
Second Cab Driver (uncredited)
Edie Martin
Lettice (uncredited)
Jack Melford
Detective (uncredited)
Arthur Mullard
(uncredited)
Ewan Roberts
Constable (uncredited)
GR
George Roderick
Radio Car Policeman (uncredited)
JR
John Rudling
Nervous Man (uncredited)
LS
Leonard Sharp
Pavement Artist (uncredited)
Peter Williams
Detective at Parcels Office (uncredited)
Neil Wilson
Policeman (uncredited)
PH
Phoebe Hodgson
Constance (uncredited)
Crew
William Rose
Writing
Otto Heller
Camera
JH
Jack Harris
Editing
Alexander Mackendrick
Directing
Michael Balcon
Production
JO
Jimmy O'Connor
Writing
SP
Sydney Pearson
Crew
DM
Dock Mathieson
Sound
HM
Hal Mason
Production
Tom Pevsner
Directing
BD
Bert Davey
Art
JS
Jack Shampan
Art
CW
Chic Waterson
Camera
Jim Clark
Editing
JM
Jim Morahan
Art
AM
Anthony Mendleson
Costume & Make-Up
AB
Alan Bryce
Camera
WSR
W. Simpson Robinson
Crew
DP
David Peers
Production
AG
Alex Garfath
Costume & Make-Up
TR
Tony Rimmington
Art
RP
Ray Parslow
Camera
HS
Herbert Smith
Camera
HA
Harry Aldous
Editing
ND
Norman Dorme
Art
JB
Joan Bridge
Editing
DM
Daphne Martin
Costume & Make-Up
SD
Stephen Dalby
Sound
FM
Felicia Manheim
Directing
William Rose
Writing
Seth Holt
Production
LW
Leo Wilkins
Sound
GS
Gordon Stone
Sound
RC
Robin Clarke
Editing
Tristram Cary
Sound
