William Henry Beveridge, 1st Baron Beveridge, was a British economist and Liberal politician who was a progressive, social reformer, and eugenicist who played a central role in designing the British welfare state. His 1942 report Social Insurance and Allied Services served as the basis for the welfare state put in place by the Labour government elected in 1945.

The Liberal Party was one of the two major political parties in the United Kingdom, along with the Conservative Party, in the 19th and early 20th centuries. Beginning as an alliance of Whigs, free trade-supporting Peelites, and reformist Radicals in the 1850s, by the end of the 19th century, it had formed four governments under William Gladstone. Despite being divided over the issue of Irish Home Rule, the party returned to government in 1905 and won a landslide victory in the 1906 general election.