Dempsey Dyer was incorporated in 1977 and has built up valuable expertise in windows, doors and conservatory manufacturing during the last twenty four years. We are based on our freehold manufacturing site at South Kirkby, near Pontefract West Yorkshire. Our mission is simple - to use our design and manufacturing skills to provide quality and value for money window products to the trade, which in turn will give long-term satisfaction to the end user. We manufacture window products in both PVC-U and Timber. We have therefore built up a committed network of trade installers who supply and fit throughout the U.K.