Britannia double glazing windows review (2024)

In this Britannia double glazing windows review, we examine the company’s pros and cons, prices, and customer and professional reviews.

By Rachel Sadler

October 19, 2023
Britannia double glazing windows Georgian sash windows in a traditional cottage with wisteria climbing the walls.

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Jump to: Fast facts | Key features | Upsides and downsides | How do Britannia windows work? | Competitor comparison | Cost | Expert opinions | Customer reviews | Our recommendation | Methodology

Britannia is a family-owned and -operated business based in Clevedon in the south of England. The company has been offering high-quality double glazing windows for the past 40 years and says it only fits windows that have an energy-efficiency rating of A+ or higher. Britannia can fit double- or triple–glazed windows that are all manufactured at its factory and headquarters in Clevedon, and you can visit showrooms in Bristol, West Sussex, Somerset, and Hampshire. 

Offering three types of frames—uPVC, aluminium and composite (aluminium windows with a timber finish)—Britannia also has a sizable range of colours and finishes to choose from, such as the standard white, cherrywood, and golden oak. The composite window range features woodgrain finishes that are designed to closely resemble real timber. Choose from woodgrain white, rustic cherry, Irish oak, cream, chartwell green, anteak, red, blue, green, grey, and black or brown.  

We’ve reviewed Britannia’s website, comparison sites, customer reviews, and what the experts say to provide a thoroughly researched review. This Britannia windows review will examine the cost, warranty, installation process, and energy-efficiency rating. We also consider the advantages and disadvantages, as well as comparing Britannia to other window providers.

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Fast facts about Britannia double glazing windows

Key features

Upsides and downsides of Britannia double glazing windows

Review highlights of why Britannia may or may not be the right choice for your home:


Low-cost monthly financing options; Buy Now, Pay Later repayment scheme; and 0% APR on purchases over £3,000

Only serves Bognor Regis, Clevedon, Bristol, Eastleigh, and the South and South West of England

Personal attention from a family run, owned, and operated business

Not the most generous warranty—Britannia offers 10-years while some competitors offer 15 or 20 years

Windows are fitted with high-tech, multi-point locking systems, ensuring your home is safe and secure

Britannia windows does not offer wooden window frames, but you can get a wood finish

Windows have an energy efficiency rating of A+ to A++, and there is an option for triple glazing

How do Britannia double glazing windows work?

Britannia double glazing windows. Dark casement windows in a modern house with white walls.
Britannia can design double glazing windows to suit many types of property, including modern architecture. (Image credit: Britannia)

In order for Britannia windows to give you a personalised quote, a Britannia consultant will visit your home and discuss the various design options available. This home visit is free, and once completed you’ll be given a no-obligation quote, which gives you the option to shop around and decide if this company is right for you. 

Your windows will then be made to measure in Britannia’s factory in Clevedon, using glass that has at least an energy efficiency rating of A+.

To help you choose your design choice, Britannia also has an online design tool where you can experiment with styles, designs, and colours without spending a penny.

Britannia double glazing windows versus competitors

Britannia is an affordable option for customers in more ways than one. If you compare its price per window, it’s fair to say that Britannia offers reasonable prices. With a uPVC window starting at £250, that is similar to that of Anglian and Safestyle. Britannia also offers an attractive, low-cost monthly financing option like the Buy Now, Pay Later repayment scheme and 0% APR on purchases over £3,000. 

Britannia also offers a wide variety of style and design choices, as well as high-quality products with a personalised service. Unfortunately, Britannia only operates in the South of England, so, in theory, is only a good choice depending on your location.  

Everest is a popular choice with customers, largely due to the benefits that the company provides. All windows come with a standard 10-year guarantee for all parts and materials, and Everest’s uPVC range comes with an appealing 20-year guarantee. Whilst these are all enticing perks, this premium brand has a price tag to match: Everest’s price range is £300–£1,250 per window.  

Britelite, however, offers a more affordable price range at £160–£1,050 per window. Like Britanina, Britelite also offers a 10-year transferable guarantee and an option for triple glazing. The company operates in Essex, London, Sussex, Kent, and Surrey, so is a good option if you’re outside of Britannia’s catchment area.

How much do Britannia double glazing windows cost?

Britannia double glazing windows. Grey uPVC casement windows in a new house with a large green lawn and a black car parked on the drive.
Because Britannia makes double glazing windows to order, it’s best to contact the company for an accurate quote. (Image credit: Britannia)

It’s difficult to provide an exact answer for how much your windows from Britannia will cost. The price depends on style, design, window size, and finish. According to online comparison sites, this is a rough estimation of how much you can expect to pay for Britannia windows:








Luckily, you do not have to think about paying in one lump sum with Britannia, as the company offers flexible payment options.

What the experts say

“Britannia Windows Ltd. is one of the leading window fitting companies in North Somerset, UK. The team members work on both commercial and domestic building properties. Their specialist team will provide excellent care throughout and beyond these years for your peace of mind. They use modern equipment to provide the best possible service to every customer. They pride themselves on delivering the best customer care service. They provide an installation service with a complete guarantee of ten years. They support a competitive finance package to spread the cost to the customer. They offer free estimation and advice.”Three Best Rated

“They have a solid reputation, address customer service and negative reviews head-on, and they utilise a network of installers to ensure swift service delivery. Their contact centre service hours are also extremely favourable for busy homeowners. Britannia offers extremely flexible payment terms and several finance options, making it an attractive option for buyers who want to use credit. They also offer a huge variety of designs, colours, and styles.”FMB

Customer reviews

Britannia has a middling Trustpilot star rating of 3.5, though nearly half of its reviews rate it as “excellent”. 

“Brittania windows were fantastic from start to finish. From the no-pressure quote, to the great price without needing to haggle, to keeping us informed along the way until installation. The fitters were polite and did a fantastic job. We’re really pleased with our windows and would be more than happy to recommend you to others.”—Jennifer Down via Trustpilot

“Absolutely terrible customer service. They fitted my UPVC using double-sided tape. When it fell off and I called customer services for repairs to be made, they sent a fitter who made a complete bodge job, and I am still waiting for them to respond to me to come and put the repair right. Don’t buy windows from Britannia Windows Clevedon. [The] customer service is awful and fitters are no better. If I could give a zero star rating, I would.”—Sarah Pope via Trustpilot

“Very satisfied with the products and service from St Ives Windows / Britannia Windows, especially with Andy and Anthony, who installed the windows. These guys did a brilliant job on a very difficult project. The age of the property meant this was a really complex installation, and the location of the property made it even harder. Despite this, they finished the job on time and to an extremely high standard due to their hard work and commitment. Would definitely use them again.”—Paul Ringham via Trustpilot

Our recommendation

Britannia windows is an excellent double glazing installer offering high-quality windows with an energy efficiency rating of A+ or A++. One of the best things about Britannia windows is the online design tool that allows you to try out different styles of windows before your installation. This coupled with a wide variety of design and colour options, showrooms, and an easy installation process make Britannia a suitable windows provider for some.

However, Britannia is only available to those that live in the South or South East of England, so clearly this company cannot be for everyone. Britannia only offers uPVC and aluminium frames, but does offer a woodgrain finish.

Britannia also offers good financing options as well as triple glazing, and its price is not as high as some other companies offering the same level of energy efficiency.

How we chose the top double glazing window providers in the UK

We conducted thorough research and compared some of the top-rated double glazing windows providers in the UK to help us offer an honest and informative Britannia windows review. We also analysed hundreds of Trustpilot reviews, looked at costs, product efficiency and quality, warranty terms, and expert opinions. This helped us to develop our own opinion of Britannia double glazing windows.

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