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
Leader of the Labour Party (UK) From oldest to youngest: Leader of the Labour Party (UK) The Leader of the Labour Party is the most senior political figure within the Labour Party in the United Kingdom. Since 12 September 2015, the office has been held by Jeremy Corbyn; who has represented the constituency of Islington North since 1983. Harriet Harman was the Deputy Leader of the Labour Party and also Acting Leader since the resignation of Ed Miliband on 8 May 2015 following Labour's defeat at the 2015 general election. On 12 September 2015, she was replaced by Jeremy Corbyn, who won the Labour leadership election.