This is the first general history of the British far left to be published in the twenty-first century. Its contents cover a range of organisations beyond the Labour Party, bringing together leading experts on British left-wing politics to examine issues of class, race and gender from 1956 to the present day. The essays collected here are designed to highlight the impact made by the far left on British politics and society. Though the predicted revolution did not come, organisations such as the International Socialists, the International Marxist Group and Militant became household names in the 1970s and 1980s. Taken as a whole, the collection demonstrates the extent to which the far left has weaved its influence into the political fabric of Britain.