The Amalgamated Union of Building Trade Workers (AUBTW) was a British trade union

Trade union

A trade union, trades union or labor union is an organization of workers that have banded together to achieve common goals such as better working conditions. The trade union, through its leadership, bargains with the employer on behalf of union members and negotiates labour contracts with...

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The AUBTW was founded in 1921 when the Operative Society of Masons, Quarrymen and Allied Trades of England and Wales, the Operative Bricklayers' Society

Operative Bricklayers' Society

The Operative Bricklayers' Society was a British New Model Trade Union based in London.The society was founded in 1818 as the London Bricklayers' Society, but by 1829 had developed into a national operative union. By the 1840s the union had about 1,400 members, roughly 2% of the total number of...

 and the Manchester Unity of Operative Bricklayers' Society merged. It was joined by the Building and Monumental Workers' Association of Scotland in 1942, the National Builders' Labourers' and Constructional Workers' Society in 1952, the National Society of Street Masons, Paviors and Road Makers in 1966 and the Amalgamated Slaters, Tilers and Roofing Operatives in 1969.

In 1971, the AUBTW merged with the Amalgamated Society of Woodworkers

Amalgamated Society of Woodworkers

The Amalgamated Society of Woodworkers was a British trades union representing carpenters, joiners and allied trades. The ASW was formed in 1921 by the amalgamation of two smaller unions...

 to form the Amalgamated Society of Woodworkers, Painters and Builders.