A Pair of Briefs

A Pair of Briefs is a 1962 British legal comedy film directed by Ralph Thomas and starring Michael Craig, Mary Peach, Brenda De Banzie and James Robertson Justice. A new female barrister bonds with a male rebel in chambers, and together they try to piece together a case.

Pilbright, about to lose the case, makes a furious declaration in which she declares the Law is an Ass. Stevens, by this time, has more sympathy for her and joins her in this. In their zeal, they offend the presiding judge, Justice Haddon. Taking them aside, he privately informs them that the suit is intended to fail, as the woman has married a millionaire and wants to remove any grounds for her previous husband to blackmail her, so their efforts were for nothing. By this time, however, the two barristers are in love.

Source: Wikipedia