Beautiful and exclusive sash windows to grace your home.

If you believe, like us, that original sliding sash windows are the most beautiful window style of all time, you're sure to appreciate our elegant yet pioneering sash window designs.

As a company, we devote our time to reproducing traditional authentic sash features, as faithfully as possible in modern materials and to the highest quality. This means our replacement sash windows don't just look great; they're also energy efficient, extremely secure and built to last.

Our Symphony, Harmony and Melody uPVC sash windows will exceed your expectations of timber alternative windows.

The Bygone Collection is one of the UK's leading sash window brand names and our company has been manufacturing and supplying authentic uPVC sash windows for over 30 years. All of our windows are fully certified, installed to the highest standards and guaranteed for 12 years.

We have professional installers covering the whole of the United Kingdom.  


These sash windows are only sold through our national network of premier partners, all of whom are certified and approved Bygone sash window installers




Locate your nearest premier installer for a free quote


Accreditations >

Learn why you get better windows because of these

  • BBA - British Board of Agrément Certified
  • ISO 9001:2000 Certified Organisation
  • SBD - Secured By Design Approved Windows
  • British Fenestration Ratings Council - A Rating
  • Energy Savings Trust Recommended Windows
  • CE Compliant Windows
  • Member of The Glazing Ombudsman
  • All Bygone windows are manufactured in the UK

Request a Quotation

Would you like to see a sample, discuss your requirements and options, or obtain an assessment of the costs for your project?


If you would like a copy of our brochure please click the download button at the bottom of this page.