- The British Glass Manufacturers' Confederation - represents the UK's glass industry.
- The British Woodworking Federation (BWF) - is recognised as the leading representative body for the woodworking industry and builders’ joinery and represents leading manufacturers, distributors and installers of doors, windows, conservatories, staircases, architectural joinery, timber frame buildings and engineered timber components.
- The Steel Window Association (SWA) - represents the great majority of UK steel window manufacturers, ranging in size from the smallest of craft-based companies through to large, multi-site companies.
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