The Communist Party of Great Britain (1920-1991) was the largest communist party in Great Britain. "There can be no doubt that this Twenty-Fifth National Congress will rank as one of the most important in the history of our Party." "It gives the Party a policy and platform which equips us to fulfil our job in the Labour movement to bring down the Tories, win a Labour Government with a new, militant programme, and advance the cause of Socialism."