The Communist Party of Britain (Marxist–Leninist), often abbreviated as CPB-ML, is a British Marxist–Leninist political party. It originated in 1968 as an anti-revisionist split from the Communist Party of Great Britain and was chaired by Reg Birch until 1985. The official programme of the party since 1972 has been The British Working Class and its Party. The publication of the CPB-ML was originally known as The Worker, but is today called Workers.