10-year guarantee
Made in Britain
60+ years in business
The Nation's Favourite
Explore our full range of uPVC windows, with designs to suit every property, from modern to period homes.
Our modern uPVC windows are energy efficient, with A-rated double glazing as standard. This helps your home feel comfortable all year round. Upgrade to for the highest efficiency ratings to help reduce your energy bills.
Our uPVC window frames have multipoint locking and design features to prevent glass removal from the outside. Our uPVC Casement windows, uPVC Flush Casement, Elite Sliding Sash and Tilt & Turn windows are accredited by Secured by Design. This is a police initiative which aims to 'design out' crime.
uPVC is our most durable window material and carries a 10-year frame guarantee. Anglian White Knight uPVC casement windows hold the BBA accreditation, meaning they can last over 35 years.
We make, or extrude, frames for our uPVC stormproof casement and tilt & turn windows at our Norwich factory. This means we have complete control over their quality from start to finish.
Our uPVC windows come in a beautiful array of colours so you can easily find the perfect look for your home. Go for our exclusive White Knight for a classic look or make a statement with a modern anthracite grey.
White Knight
Golden Oak
Dark Woodgrain
White Woodgrain
Dual Anthracite Grey
Dual Cream
Dual Dark Woodgrain
Dual Golden Oak
Dual Sage GreenCompare the energy ratings of our most popular uPVC window styles. The table below shows you their thermal performance to give you an idea of how much they could benefit your home.
uPVC (unplasticised polyvinyl chloride) is a type of plastic used to manufacture window and door frames. The term ‘unplasticised’ means that two plasticisers have been removed, which is what gives uPVC its strength and durability. It’s also weatherproof, low maintenance and can be fitted with double or triple-glazing.
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A 10-year parts and labour guarantee is included in your Anglian double glazing price.
Our products are made from start to finish in a British factory by skilled craftspeople.
If you find cheaper like for like uPVC windows elsewhere, we'll match the price.
uPVC windows can suit almost any type of property, covering a wide range of styles, colours and designs. Whether your home is modern or traditional, they offer a durable, attractive, energy-efficient solution.
uPVC windows have a wide range of traditional style customisations to perfectly match your Victorian home. The classic Victorian windows were sash windows with a central bar. Replace or revive original features with uPVC sash windows, adding period charm with modern security and energy efficiency.
uPVC is the most popular choice of window for modern homes, with great durability, security and energy efficiency. Flush casement windows have become the top choice for bringing style and modernity, while meshing with period homes. Tilt & Turn and stormproof casement windows are also great options for the modern home.
uPVC cottage windows create the look of cottage or Georgian windows with glazing bars on the outside. Choose from uPVC casement, flush, or sash windows to create the perfect cottage window for your home. Cottage bars are a great way to match original designs of Edwardian and Victorian windows too.
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Learn why it's worth considering new double or triple-glazed windows to attract homebuyers.
Explore the differences between double and triple glazing to decide which is right for your home
Discover our range of finishes and colours to give your windows the perfect look.
Find out the difference between an A++ and an E-rated window and why we install A-rated as standard.
Your questions on uPVC windows answered by us.
How much uPVC windows cost largely depends on its size, style and colour. Higher quality uPVC will also increase cost, as can the companies you deal with. Specialist companies will often have higher costs, for example. Local companies can sometimes offer lower pricing, but national companies like us offer a price match promise. This means we will match a like for like quote for uPVC windows.
Depending on the quality and maintenance, uPVC windows can last for up to 20-25 years, with some windows lasting even longer. Our White Knight uPVC casement and tilt and turn windows are BBA accredited to last more than 35 years with proper care and cleaning.
Although they sound similar, uPVC and PVC are different. uPVC (unplasticised polyvinyl chloride) is stronger than PVC (polyvinyl chloride), which is more flexible. PVC contains two plasticisers – BPA and phthalates – which are removed in the uPVC manufacturing process. This is why uPVC is called unplasticised. Removing the two plasticisers makes uPVC much stronger and far more suited to windows, doors, and building materials.
uPVC windows are very secure, offering strong frames, anti-burglar devices, and multi-point locking systems. Many of our uPVC windows feature the police-backed Secured by Design accreditation. Find out more about Anglian window security.
Yes, uPVC windows offer excellent energy efficiency. However, it can also depend on the quality of the frame construction and the glazing they are paired with. That said, all windows have to meet at least the minimum of a B rating for energy efficiency. Our uPVC windows have an A or A+ energy rating as standard with double or triple glazing. This can go up to the highest A++ rating with triple glazed uPVC flush windows.
Double glazed uPVC windows offer a good level of soundproofing. Sound has to travel through a multichambered frame, as well as two panes of glass and a layer of inert gas. uPVC is a good material for sound insulation, with significant benefits over aluminium. In terms of frame material, timber is probably the best for sound insulation. Overall, uPVC is very good at decreasing outside noise vs older double glazing and single glazed windows.
