Trailer
Cast
Katie Johnson
Mrs. Wilberforce
Lucy Griffiths
Miss Pringle (uncredited)
Sam Kydd
Second Cab Driver (uncredited)
Ewan Roberts
Constable (uncredited)
Kenneth Connor
Cab Driver (uncredited)
Alec Guinness
Professor Marcus
Danny Green
'One-Round', alias 'Mr. Lawson'
Fred Griffiths
Junk Man (uncredited)
Peter Williams
Detective at Parcels Office (uncredited)
Neil Wilson
Policeman (uncredited)
Herbert Lom
Louis, alias 'Mr. Harvey'
Peter Sellers
Harry, alias 'Mr. Robinson'
Jack Melford
Detective (uncredited)
Stratford Johns
Security Guard (uncredited)
Edie Martin
Lettice (uncredited)
Harold Goodwin
Parcels Clerk (uncredited)
Cecil Parker
Claude, alias 'Major Courtney'
Jack Warner
The Superintendent
Arthur Mullard
(uncredited)