With nearly 40 years of experienced craftsmanship, we create the finest range of sash windows, casement windows and doors – bespoke and tailored to suit your needs.
John Ellis started the business nearly 40 years, when he decided to take his passion for craftsmanship and joinery and create a window company based on offering the highest level of quality and service. With the help of his two sons, Patrick & Jack and backed up by a highly skilled team of craftsman London Box Sash has grown into London’s leading premium window and door manufacturer. As a family business, we have a deep understanding of manufacturing and installing professionally crafted windows, with a knowledge that is unmatched and truly valued, which helps us to create products that deliver on every level.
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