The twelve members of the Communist Party of Great Britain arrested and tried on a charge of violation of the Mutiny Act 1797. Back row: Jack Murphy; William Gallagher; Wal Hannington. Middle row: Harry Pollitt; Ernie Cant; Tom Wintringham; Albert Inkpin. Front row: John Campbell; Arthur McManus; William Rust; Robin Page Arnot; Tom Bell. During the trial, the Judge declared that while it was not a crime to be a Communist, it was a crime to be a member of the party. Five of the twelve were imprisoned for twelve months, and the others for six months.