There Was a Crooked Man is a 1960 British comedy film. It features Norman Wisdom, Alfred Marks, Andrew Cruickshank, Reginald Beckwith, and Susannah York.
When a law-abiding demolition expert is duped by a gang of criminals into helping them he is caught and jailed. When he is released he goes straight and then notices a leading citizen in his town is cheating his neighbours.