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uPVC casement windows

uPVC casement windows are our most popular choice. Each one is individually designed according to your specifications and manufactured by our team of skilled craftspeople in our UK factory, using the highest-quality, energy-efficient materials and our own exclusive uPVC formula. With a 10-year guarantee on the frames and 15-year guarantee on the sealed units, they offer long-lasting peace of mind.

Each uPVC casement window is individually made with your choice of frame, glass and configuration.

  • Allows maximum light into your rooms
  • Energy efficient – can help reduce your heating bills
  • Secure – shoot-bolt locks, key locking handles and toughened glass
  • Effective noise reduction – cutting down sounds from outside
  • Added heat retention – opt for A+ rated windows or triple glazing

Our uPVC casement windows allow maximum light into your rooms and their energy-efficiency can help cut your heating bills. They look great, help to keep you safe and can be designed to be unique to you.

We make it easy for you to achieve the cost and energy savings you’re looking for. One of our Anglian designers will visit you at home to give you expert advice tailored to your specific circumstances.

They’ll show you the benefits of opting for our A+ rated double glazed windows or triple glazing, guide you through the choice of frame configurations that will make your windows perfect for each room, and show you our range of hinges, openings, handles, decorative bars and glass.

Once you’ve decided what you want, they can give you an accurate quote. Our craftsmen will then make your uPVC windows to your exact specifications, ensuring that they fit perfectly.

up to 50% off windows up to 50% off windows
  • 10 year guarantee
  • Established in 1966
  • Made in Britain

Explore our range of frame and glass options

Frame options
White Knight uPVC casement window
All dual colours are white on inside

See how your uPVC casement windows could look by selecting the colour and handles of your choice.

Outside View
Select frame colour
Each window material offers a wide choice of colours for the outside of the frames. With our uPVC windows, you also have a dual colour option combining Woodgrain or Anthracite Grey on the outside with White Knight on the inside.
Single colour

Same colour on the inside and out

Dual colour

Different colours on the inside and out

explore handle & frame options
Here are some of the most popular frame configurations

Your designer will talk you through the vast range of options available to suit your needs

  • quad-split-middle
  • single
  • top-opener
  • vertical-split
  • vertical-triple
  • triple-fire-escape
  • Double top casement window configuration
White Knight uPVC casement window
Inside View
Select your handles

White Knight uPVC casement window Chrome window handles
Glass options

Your designer will help you select the type of glass that’s most suited to each room in your home to give you the best levels of energy-savings, security, noise reduction and privacy.

You can also give your windows the look you want by choosing from our plain, decorative or obscured glass and insert options.

Clear glass
Select glass type
We make every glass panel uniquely for your windows and offer you an exciting choice of clear, obscure, etched and leaded glass, as well as decorative designs and bars. Your Anglian designer can help you choose the right glass for each window during your appointment.
Glazing options
  • Double Glazing
  • Triple Glazing
    Our new triple glazed windows are designed and manufactured to keep in more of the sun's heat and retain more warmth within your home. The extra panel also offers great acoustic performance reducing noise from the outside. More about triple glazing.
  • Safe & Sound
    Anglian's standard A rated windows provide an ideal level of sound reduction at 31dB but if you need even higher levels of sound insulation you can opt for our Safe & Sound glazing which uses 6.4mm laminated glass on the outside and a 4mm inner pane, with a 14mm cavity, increasing the sound insulation to 36dB. That's a 16% improvement. More about Safe & Sound.
Energy Rating / Performance options
These tell you how much energy a window loses or gains. They’re based on three factors – how much heat is retained or lost through the window, how much heat can be harvested from the sun and how much heat is lost through draughts. More about energy ratings
  • A+
  • A
  • B

Our best-selling uPVC casement windows are one of our most flexible styles. We can configure them to give you the ventilation options and look you want in a range of colours, from white to realistic wood effects. You can even choose our dual option of white inside and Anthracite Grey or a wood effect on the exterior. A selection of handles and choice of decorative glass add unique style, while our glazing options give your windows the energy-efficiency you desire.

Be inspired by our customers who have transformed their homes

Draught Free LivingImprovements that benefit the whole family

Railway construction planner Ray Clarke and his wife Lucy moved into their home and have been completing phases of renovation work ever since. Soon after the birth of their second daughter, it was time to have new windows and exterior doors fitted.

“We moved here in 2005, and 10 months ago had a daughter. She was sitting in the living room near the French doors and the draughts were whistling around her. That decided it for us,” said Lucy.

“We chose Anglian to do the work because we had a set idea about how we wanted the windows to look,” says Ray. “The salesman took time to explain the different finishes and styles, as well as listening to exactly what we wanted.”

“We had other window suppliers around but no-one else could do what we wanted, whereas Anglian manufacture their own windows. The result is terrific – the house is a lot lighter inside, and draught-free,” says Ray.

Anglian case study - Clarke

Why Choose Anglian?

You'll want to be certain that you've chosen the right company to replace your windows, so discover the Benefits of Anglian Glazed Windows and rest assured that you've made the best decision. We guide you through every stage of the process, even making payment easy. As you can see below, we confidently guarantee the quality of our work.


We use only the best materials and finest craftsmanship throughout our 50 years in the business to bring you top quality products that will last for years.

  • Premium materials
  • Individually designed and built
  • BBA certified products
  • Made in Britain
Read about our accreditations


We use the finest materials and craftsmanship, so we're confident that you won't need to call on our guarantees:

  • 10-year guarantee on uPVC, wood and aluminium
  • 5-year guarantee on stained wooden windows
  • 15-year guarantee on our Ultra gas filled units
  • Quality Assurance at every stage of production
Our guarantees

Our Accreditations

Feefo accreditation
Awarded Feefo Trusted Merchant for customer satisfaction in 2015 & 2016
British Board of Agrement windows accreditation
The British Board of Agrement provides certification on the quality of our products.
Energy Saving Trust logo
Windows with a WER rating of A or above can be registered with the Energy Saving Trust.
Trustmark logo
TrustMark is a government endorsed not-for-profit organisation that operates a quality mark framework through more than 30 scheme operators who work in the repair, maintenance and improvement sector.
Glass and Glazing Federation logo
Anglian is a leading member of the Glass and Glazing Federation (GGF).
Made in Britain logo
Certifies products made from start to finish in a British factory by British craftspeople.
The Glazing Arbitration Scheme Logo
Independent service that deals with disputes between registered businesses and consumers.

Customer Reviews

Windows FAQs

Find out more about double and triple glazing in our useful Window FAQs Section or read our articles below.

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Anglian FAQs

Got questions about choosing Anglian? Find out why Anglian is the right choice for your replacement windows.

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Home Inspiration From Anglian

You'll want to pick your new casement windows wisely, so our "Good to be Home" online magazine will not only help to inform your choices but it's bursting with tips and information to help you transform your home. With great interior design tips, the background on Laura Ashley's stunning glass designs and the science behind our energy-efficient windows, you'll find what you're looking for.