John Lamb Reed OBE was an English actor, dancer and singer, known for his nimble performances in the principal comic roles of the Savoy Operas, particularly with the D'Oyly Carte Opera Company. Reed has been called "the last great exponent" of the Gilbert and Sullivan comedy roles.

Trial by Jury is a comic opera in one act, with music by Arthur Sullivan and libretto by W. S. Gilbert. It was first produced on 25 March 1875, at London's Royalty Theatre, where it initially ran for 131 performances and was considered a hit, receiving critical praise and outrunning its popular companion piece, Jacques Offenbach's La Périchole. The story concerns a "breach of promise of marriage" lawsuit in which the judge and legal system are the objects of lighthearted satire. Gilbert based the libretto of Trial by Jury on an operetta parody that he had written in 1868.