Crime Comedy
The crooks in London know how it works. No one carries guns and no one resists the police. Then a new gang appears that go one better. They dress as police and steal from the crooks. This upsets the natural order of the police/criminal relationship and the police and the crooks join forces to catch the IPOs (Impersonating Police Officers), including an armoured car robbery in which the police must help the gangs to set a trap.
Directed by
Cliff Owen
Written by
Ray Galton, John Antrobus, Alan Simpson
Michael Caine
Police Officer (uncredited)
John Le Mesurier
Assistant Commissioner
Peter Sellers
Pearly Gates
Lionel Jeffries
Inspector Fred 'Nosey' Parker
Dennis Price
Educated Ernest (uncredited)
Bernard Cribbins
Nervous O'Toole
Ed Devereaux
Bluey May
Graham Stark
Sid Cooper
John Junkin
Maurice (uncredited)
Barry Keegan
Alf
John Harvey
Sergeant at Police Station (uncredited)
Tutte Lemkow
Siggy Schmoltz
Marianne Stone
Woman at Meeting (uncredited)
Nanette Newman
Valerie
Bill Kerr
Jack Coombes
Arthur Mullard
Brassknuckles
Deryck Guyler
Police Constable at Scotland Yard (uncredited)
Davy Kaye
Trainer King
Gerald Sim
Airport Official (uncredited)
Reg Lye
Reg Denton
Martin Boddey
Superintendent J.S. Forest
Irene Browne
Dowager
Dick Emery
Adulterous Man (uncredited)
Vanda Godsell
Annette
Cardew Robinson
Postman (uncredited)
Mario Fabrizi
Van Driver (uncredited)
Dermot Kelly
Misery Martin
Harold Siddons
Police Constable in Garage (uncredited)
Jack Silk
Police Constable at Station (uncredited)

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