William Adamson (2 April 1863 – 23 February 1936) was a Scottish trade unionist and Labour Party politician. He was Leader of the Labour Party from 1917 to 1921 and was Secretary of State for Scotland in 1924 and during 1929–1931 in the first two Labour ministries headed by Ramsay MacDonald.
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Background
Adamson was born in Dunfermline, Fife, and was educated at a local dame school. He worked as a miner in Fife where he became involved with the National Union of Mineworkers. In 1902–08 he was Assistant Secretary of the Fife and Kinross Miners' Association, and he thereafter served as its General Secretary.
Political career
Active with the new Labour Party, Adamson was first elected to Parliament for West Fife in the December 1910 general election. His victory was the only Labour gain from the Liberals in that election.
Adamson was elected Chairman of the Parliamentary Labour Party on 24 October 1917, a post he held until 1921. He led the party into the general election of 1918, which saw Labour gain 15 seats and become the largest opposition party in the House of Commons for the first time; however, there remained uncertainty as to whether Adamson or the leader of the independent Liberals, Donald Maclean could claim to be the true leader of the opposition in the Commons.



