The Wrong Arm of the Law is a 1963 British comedy film directed by Cliff Owen and starring Peter Sellers, Bernard Cribbins, Lionel Jeffries, John Le Mesurier, Bill Kerr and Nanette Newman.

Initially, Pearly blames rival crook "Nervous" O'Toole in a breakdown of their syndicate, a closed shop arrangement to the criminal underworld of London, which they have recently set up to divide up the areas and protect each others interests.

[citation needed] Peter Sellers loved the 1961 Aston Martin DB4 GT used in the high-speed get-away so much that he bought the car after shooting the film, contingent on the engine being replaced with a 4.0-litre Lagonda Rapide.

[6] The Monthly Film Bulletin wrote: "Cliff Owen's considerable competence shows in the way he takes good and bad jokes equably in his stride, cutting sharply as soon as a comedy point has been made, getting pretty well every ounce of value out of his script. ...

Lionel Jeffries, desperately eager and despairingly confused in the pursuit of crime, John Le Mesurier, a Scotland Yard official lightly disguised as an ice-cream salesman but clinging to the dignity of his Whitehall hat, Peter Sellers, training his gang by way of home movies and pampering them with holidays on the Costa Brava, are at their accomplished best.

Cliff Owen directs the marvellously inventive script with due care as Scotland Yard and Sellers decide to co-operate to apprehend a bunch of Australian crooks posing as policemen.