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Double Glazing, Windows, Doors and Conservatories

Home Improvement Experts, Installers, Suppliers

Britannia Windows have been transforming homes in the South West for 40 years. People love us for our friendly service, the quality of our double glazing and the impeccable finish of our work. We’re a family business, plugged into our local community and passionate about respecting the unique character of this beautiful corner of England. Our mission is simple: to add flair and beauty to homes across the region while minimising our impact on the environment.


Britannia Windows are a friendly bunch, eager to discuss your home improvement needs with you. We have several showrooms in the area – why not visit the one nearest you to browse our stunning range of products? We have great finance options to suit your budget.

Spring Sales : Up to 45% Off Windows and Doors


By providing your details, you will be contacted by Britannia Windows regarding your enquiry. You will not receive marketing emails unless you choose to opt in. Privacy Policy.

Following government advice, we are supporting the wellbeing of our customers and team members – our showroom is now temporarily closed. If you require a new quotation we do have the capability to quote for you from photos or drawings you may have. 
We appreciate your patience and understanding at this difficult time and would like to thank you for your support. As soon we get the green light from the government we will be up and running as normal installing windows, doors and conservatories for our valued customers.
Please email and we would be delighted to help with any upcoming projects you may have.

image of double glazed windows


Elegance and durability – two qualities you deserve from your windows. At Britannia, we install double glazed windows that look stunning and last for decades. Our state-of-the-art frames and mechanisms are designed to give you unrivalled protection from the British elements, shrinking your energy bills and minimising sound pollution. Safety and snugness are guaranteed. Find Out More Download The Brochure

image of traditional conservatory

Conservatories and Extensions

Invite natural daylight to flood your world with a stylish home extension tailored to your needs. An energy-efficient, weather-tested conservatory from Britannia will give your family the extra space it needs to stretch and breathe. Choosing between modern and traditional conservatories can feel overwhelming – there are so many options to consider. We’re here to help you find the perfect solution for your lifestyle and budget. Find Out More Download The Brochure

image of traditional conservatory

image of exterior door


Give your home the dramatic upgrade it needs with a door that reflects your tastes and aspirations. Front doors have two vital functions – to make a powerful first impression and to keep you warm and safe on the inside. Britannia doors excel on both fronts. We specialise in both modern and traditional doors, and our choice of decorative details is staggering, allowing you to add that vital personal touch. Find Out More Download The Brochure

image of folding doors


You love your outside space, so why shut it out ever? Bifold doors pour year-round light into your home and create that coveted flow between your living zone and the outside. Our sliding frames are made from strong, slim aluminium to maximise the volume of glass and provide uninterrupted views. Folding doors smoothly to give a neat stacking effect and effortless access to your garden is our norm. Find Out More Download The Brochure

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Family Company, Friendly Service

Britannia Windows was founded in 1979 and remains a family business to this day and supplies windows, doors and conservatories. All installations carried out by local craftsmen.

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Secure Finance Options

Whether you are looking for a home extension or replacement windows, as suppliers we are able to offer you a range of finance options, with the peace of mind of spreading the cost.


Network of Showrooms & Installers

Britannia Windows team are all local residents and will use their local knowledge to ensure that you only buy the right product for your home and location.


Quality Guarantee Factory in South West

Crafted at our factory in the South West of England, our home improvement products go through rigorous testing for performance, security and weather resistance.


Get a quote from your local showroom With showrooms and fitters close to you for local attention, and Network Britannia’s support structure.