Acton Smee Ayrton was a British barrister and Liberal Party politician. Considered a radical and champion of the working classes, he served as First Commissioner of Works under William Ewart Gladstone between 1869 and 1873. He is best remembered for the "Ayrton controversy" over scientific facilities at Kew Gardens.

The First Commissioner of Works and Public Buildings was a position within the government of the United Kingdom of Great Britain and Ireland, and subsequent to 1922, within the government of the United Kingdom of Great Britain and Northern Ireland. It took over some of the functions of the First Commissioner of Woods and Forests in 1851 when the portfolio of Crown holdings was divided into the public and the commercial. The position was frequently of cabinet level. The office was renamed Minister of Works and Buildings and First Commissioner of Works in 1940, Minister of Works and Planning upon receiving statutory planning powers from the Ministry of Health in 1942, Minister of Works when those planning powers were moved to the Ministry of Town and Country Planning in 1943, and finally Minister of Public Buildings and Works in 1962. In this last form the commissioner had "additional responsibility for studying the problems of the building industry". On 15 October 1970 the role was amalgamated with the Minister of Transport and the Minister of Housing and Local Government in the Department of the Environment.