Leading Independent Window Fitters in Doncaster, Rotherham & Barnsley

Welcome to the website of Britannic Windows & Conservatories. Based in Doncaster, we combine thirty years of unrivalled trade experience to deliver quality uPVC doors, uPVC conservatories and composite doors, as well as uPVC windows and double glazing using Veka 70mm profiles. We are registered FENSA members serving the trade and public around South Yorkshire, with our door and window fitters especially active in and around nearby Barnsley and Rotherham.


Unlike many window companies, we manufacture our own products and have an expansive selection on offer including composite doors, double glazing, conservatories, UPVC doors and UPVC windows. All our products come with an extensive ten-year guarantee and GGFI insurance, for your peace of mind.


Britannic Windows & Conservatories is the top choice amongst door and window companies in South Yorkshire. Our door and window fitters provide installations of the highest quality and you can find our products within countless homes around Barnsley, Doncaster and Rotherham. To explore the full range of uPVC doors, composite doors, double glazing, uPVC windows and uPVC conservatories we have on offer, we urge you to visit our showroom at your earliest convenience.

image of a newly constructed conservatory

Bespoke Doors, Windows & Conservatories

We enjoy an unrivalled reputation as one of the most trusted window companies in Doncaster. Our business manufactures all products on site before our NVQ qualified team of door and window fitters implement them to the best possible standards. Our 100% customer satisfaction record speaks for itself and we’re rightfully proud of our impeccable customer care reputation.


While many window companies around Barnsley, Doncaster and Rotherham solely offer a supply and installation service, Britannic Windows & Conservatories also offer a range of repair services for everything from double glazing and uPVC conservatories, to composite doors, UPVC doors and UPVC windows. If you have existing fixtures that have been damaged, don’t hesitate to get in contact with us.

image of a uPVC window being opened
image of the front of a conservatory
image of the interior of a summerhouse

Your One Stop Door & Window Fitters

At Britannic Windows and Conservatories, our reliable team will handle all your measuring, quotation, assembly and installation requirements. We also deliver a huge range of benefits that our customers have come to know and respect:


  • Trusted, competitively priced measuring, manufacturing and installation services
  • Over thirty years of trade experience to serve our trade and public customers
  • Serve all South Yorkshire, including Barnsley, Doncaster and Rotherham areas
  • Premium quality double glazing, UPVC doors, UPVC windows and composite doors
  • Offer unbelievable discounts on window repairs when you buy our new fittings
  • Qualified conservatory, door and window fitters with NVQ certification

Looking for reliable door and window companies in South Yorkshire? Call us on 01709 252 389, for windows, doors and uPVC conservatories in Doncaster, Rotherham & Barnsley.