Since the Second World War, Marxism in Britain has declined almost to the point of oblivion. The Communist Party of Great Britain had more than 50,000 members in the early 1940s, but less than 5,000 when it disbanded in 1991. Dissenting and Trotskyist organisations experienced a very similar decline, although there has been a late flowering of Marxism in Scotland.

Focusing on the current debate in British Marxist history over the influence of Moscow and Stalinism on the Communist Party, Keith Laybourn explores the ways in which this issue, which divides historians, undermined Marxism in Britain.