Scottish Labour Party (1976) MP for South Ayrshire, John Robertson, then MP for Paisley and Alex Neil, the UK Labour Party's senior Scottish researcher. The split came just before the resignation of Harold Wilson as prime minister and party leader and the election of James Callaghan as his successor. By 1979 the Scottish Labour Party had lost its seats in the House of Commons, and in 1981 it was formally disbanded. Almost immediately the SLP became the focus for entryism from the International Marxist Group (IMG), and at the party's first congress in October 1976 the IMG was expelled, along with a number of
1922 Labour Party (UK) leadership election leader, MacDonald became prime minister in 1924 and from 1929 to 1931, at which point he became head of a National Government that was opposed by the bulk of the Labour Party, and he was succeeded as party leader by Arthur Henderson. MacDonald was subsequently expelled from the party. In 1932, George Lansbury became leader unopposed, as one of the few experienced Labour MPs left in Parliament, but trades union opposition to his pacifism led to his resignation in 1935 and replacement by his deputy Clement Attlee. A month later Attlee was challenged in a new election. 1922 Labour Party