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Window Security

Because your security is our priority, every Anglian window is designed and built to keep burglars out of your home. We use the latest technology and manufacturing techniques to give you the peace of mind that comes with knowing that your property is well protected and our Casement, Tilt and Turn and Sliding Sash windows are all 'Secure by Design' accredited.

white knight uPVC casement windows
up to 55% off windows up to 55% off windows
  • 10 year guarantee
  • Established in 1966
  • Made in Britain

We leave nothing to chance when it comes to the important task of ensuring that your home is as “safe as houses”, so all our windows are fitted as standard with a range of modern security features.

We manufacture our frames from our own uPVC formula to guarantee their strength and quality. They’re designed in a robust, multi-chambered construction, and we use welded joints for extra resistance to any attempted break-in.

  • High security steel shoot bolts lock into every frame at two points for additional strength and an effective excluder device offers top levels of protection against your window being forced open by a jemmy (except on fire escape vents). Every opening also has a key locking security handle as standard.
  • By their very nature, both double and triple glazed windows offer greater security than single glazing, as the extra panes of glass make the windows significantly tougher to break. As an additional precaution, we also internally fit the beading to all our windows to make it impossible to remove the glass from the outside.
  • All our security features are rigorously tested, giving you the reassurance that your home will fight back against any would-be burglars.

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Why Choose Anglian?

With 95% of our customers happy to recommend us to their family and friends, we know that the Benefits of Anglian Glazed Windows are recognised by many. We go out of our way to make replacing your windows an easy and enjoyable experience, offering expert advice, fuss-fee installation and easy payment options.


Our quest for quality means we invest in the latest technology and, with 50 years' experience, we've the skills and know-how to give you the best windows for your needs.

  • Vigorous tried and tested security features
  • Made in Britain
  • BBA certified products
  • Fast, professional installation
Read about our accreditations


Our windows are made with the care and expertise that's you'd expect from Anglian so we can confidently guarantee them for years to come:

  • 10-year guarantee on uPVC, wood and aluminium
  • 5-year guarantee on stained wooden windows
  • 15-year guarantee on our Ultra gas filled units
  • Additional Glass & Glazing Federation (GGF) protection
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

Why you should choose Anglian? We've 50 years' experience yet we’re always looking ahead. Read more about why so many people choose us for their new windows:

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6 steps to your new windows

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Home Inspiration From Anglian

If replacing your windows has inspired you to research more into window security, energy efficiency or even more general home improvements, take a look at "Good to be Home" online magazine for inspiration. Packed with expert advice and information, it will help you with everything from choosing you windows to creative upcycling projects.