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