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The Northern Carpet Trades Union (NCTU) was a trade union in the United Kingdom. It was first formed in 1892 in Halifax, West Yorkshire, later expanding to cover all of Northern England. The NCTU was formed later than the Power Loom Carpet Weavers' and Textile Workers' Association, based in Kidderminster, and was considerably smaller. Approximately a fifth of eligible workers were members of the NCTU in 1939, compared to 50 percent for the Kidderminster union. Attempts to amalgamate all unions in the carpet trade failed, but in 1917 the was established with equal representation from the NCTU, , National Union of Dyers, Bleachers and Textile Workers and Power Loom Carpet Weavers' and Textile Workers' Union.