Brothers in Law is a 1957 British comedy film directed by Roy Boulting and starring Richard Attenborough, Ian Carmichael, Terry-Thomas and Jill Adams.

[1][2] It was written by Boulting, Jeffrey Dell and Frank Harvey Jr., adapted from the 1955 novel Brothers in Law by Henry Cecil, a comedy set in the legal profession.

Ian Carmichael, despite a tendency towards theatrical, rather than cinematic, mannerisms in moments of crisis, is generally more restrained than in Private's Progress, and confirms that he is one of the most talented of British light comedians. ...

Among the remarkably assured cast, Terry-Thomas, Miles Malleson and Irene Handl give particularly bright performances, and Eric Barker's clerk is self-effacing and shrewdly observed.

"[6] Tony Sloman in the Radio Times wrote, "Carmichael is surrounded here by a cast of accomplished character actors, including the splendid Terry-Thomas and the redoubtable Richard Attenborough as a smarmy fellow barrister.