At London Box Sash Windows we are specialists in the manufacture and supply of high-quality Accoya® timber box sash windows. Our product range includes sash windows, casement windows, doors and a varied amount of bespoke commissions. With over 25 years' experience in the construction industry, we understand our customers' needs. That’s why we produce a quality product at a competitive price with short, reliable lead times, every time. Our goal at LBSW is to meet targets on price, quality and speed. Together with our dedicated team, we are committed to continuously improving and innovating our product, so our customers always get the best possible experience.