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Best Double Glazing Companies in the UK in 2024

In the UK, several companies stand out in the double glazing industry, each with its unique offerings and strengths. These companies include Safestyle UK, Everest, Anglian Home Improvements, CR Smith, and First Home Improvements. Selecting the best double glazing company in the UK can significantly impact your energy bills, comfort, and overall quality of life. 

With so many options available, many homeowners may feel overwhelmed. Whether you want a large installation company or a local provider, this article aims to help you make an informed decision.

Warmable Trustpilot
Best Double Glazing Companies in the UK in 2023

How to Get the Best Double Glazed Window Quotes Online

1. Apply Online

Kickstart your journey to energy-efficient windows by filling out a brief form on the Warmable website. This form collects essential information about your project and location, helping us understand your requirements.

2. Receive a Call:

After submitting the form, you'll swiftly receive a call from our dedicated team to schedule a visit from trusted window installers in your local area. They will offer you free quotes and will provide a comprehensive overview of the costs and the scope of your window replacement project.

3. Engineer Quote:

After a thorough assessment of your home and needs, you'll receive a free quote from an accredited window specialist.

4. Installation:

Armed with multiple quotes, you have the opportunity to make an informed decision. Compare the offers from different installers objectively, considering your preferences and budget. Select the installer that best aligns with your vision for improved home energy efficiency.

Safestyle UK

  • Trustpilot Rating: 4.1 out of 5 (based on 42,946 reviews)
  • Special Offer: “Fit this winter and Save Up to 20%”
  • Finance Options: Three options available, including “24 Months Interest-Free Credit” and “Buy Now Pay in 12 Months”
  • Warranty/Guarantee: 10 years on all products
  • Location: Across England and Wales

Safestyle UK, with over 20 years of experience, has earned a Trustpilot rating of 4.1 out of 5 based on 42,946 reviews. The company offers special winter discounts of up to 20%, making it an attractive option for homeowners looking to save. 

With three finance options, including interest-free credit, Safestyle UK ensures affordability for its customers. Moreover, a 10-year warranty on all products provides peace of mind regarding product quality.



  • Trustpilot Rating: 4.3 out of 5 (based on 12,141 reviews)
  • Special Offers: “Triple Glazing for the Price of Double Glazing” and “Multibuy Savings”
  • Finance Options: Low rate finance options available for 10 and 15 years
  • Warranty/Guarantee: 10-year option, 20-year option, and lifetime option (for condensation and fogging)
  • Location: Across England, Scotland, and Wales

Everest, a prominent player in the double glazing industry, boasts a Trustpilot rating of 4.3 out of 5 based on 12,141 reviews. 

With a strong presence in England, Scotland, and Wales, Everest offers various special deals and customers can benefit from low-rate finance options and extensive warranty choices, including a lifetime guarantee against condensation and fogging.


First Home Improvements

  • Trustpilot Rating: 4.4 out of 5 (based on 2,926 reviews)
  • Special Offers: Up to 30% off across their whole product range
  • Finance Options: £100 deposit, interest-free credit options available
  • Warranty/Guarantee: 12-year warranty across the whole range of windows
  • Location: Across the counties of England

First Home Improvements, with a Trustpilot rating of 4.4 based on 2,926 reviews, offers discounts of up to 30% across their entire product range. The company stands by its quality, with a 12-year warranty on all windows. Flexible financing options, including interest-free credit with a £100 deposit, make it accessible to a wide range of customers.

FAQ About Best Double Glazed Windows

What is double glazing, and why is it important?

How do I choose the best double glazing company?

What are the top double glazing companies in the UK?

What should I ask for when requesting a quote from a double glazing company?

Are there any energy efficiency ratings for double glazing?

Do double glazing companies offer warranties or guarantees?

How can I ensure my double glazing project is within budget?

Are there any environmentally friendly options for double glazing?

Anglian Home Improvements

  • Trustpilot Rating: 3.8 out of 5 (based on 28,740 reviews)
  • Special Offers: “Up to £250 off upon online orders” and “Up to £250 cash reward on recommendations to friends (unlimited)”
  • Finance Options: Low rate finance option available for 3 years with a minimum deposit of £199
  • Warranty/Guarantee: 10 years on parts and labor on all windows, 10 to 15 years on all gas-filled sealed units
  • Location: England, Scotland, and Wales

Anglian Home Improvements, established in 1966, offers competitive prices and deals online orders and cash rewards for referrals. The company provides a low-rate finance option for three years, making it affordable for homeowners. Anglian Home Improvements offers warranties of 10 years on parts and labor for all windows and 10 to 15 years on gas-filled sealed units.

CR Smith

  • Trustpilot Rating: 4.9 out of 5 (based on 3,257 reviews)
  • Special Offers: Monthly updated special offers section
  • Finance Options: “Order now, Pay in 2024” option and improved finance rate (limited)
  • Warranty/Guarantee: 10 years on product and installation
  • Location: Primarily in Scotland

For homeowners in Scotland, CR Smith is an excellent choice. This Scotland-based double glazing company boasts an impressive Trustpilot rating of 4.9 based on 3,257 reviews. The company provides monthly updated special offers, offering flexibility to customers. 

CR Smith offers a 10-year warranty on products and installation, ensuring lasting quality. Low-interest credit options are available, subject to status and affordability.

Types of Window

Why Should I Use Warmable For Window Quotes?

At Warmable, we are passionate about helping British households and companies find the best new window prices. Whether you are looking for a new window that can save money or has a high efficiency rating, we compare hundreds of window types and can help find the right one for you.



Happy customers

How to Choose the Best Double Glazing Company

To make an informed decision, check that your double glazing company is accredited. Here are some examples of accreditations:

  • FENSA (Fenestration Self Assessment Scheme): FENSA is one of the most well-known certifications for replacement window and door installations. It ensures that the installations comply with building regulations, offering legal protection for homeowners. To verify FENSA certification, check the FENSA website for a list of registered companies.
  • CERTASS: CERTASS is another certification body that self-certifies installations against building regulations. Confirm that the company is registered with CERTASS and can provide the necessary compliance certificates.
  • BSI Kitemark: The BSI Kitemark signifies a product’s quality and compliance with industry standards. It’s an assurance of the quality and durability of the double glazing products. Companies that have earned the BSI Kitemark have undergone rigorous testing and evaluation. Be sure to ask for proof of the BSI Kitemark certification from the company.
  • Other Industry Certifications: Depending on your specific needs, other certifications may be relevant. For example, if you’re concerned about energy efficiency, look for BFRC (British Fenestration Rating Council) ratings, which measure a window’s energy performance. The Quiet Mark certification indicates that a product is designed to reduce noise, making it suitable for soundproofing concerns.


Why Does Double Glazing Matter?

Double glazing can help you save money on bills and live more comfortably. As the name suggests, it involves using two panes of glass with a small gap in between. This gap can be filled with air or gas, usually argon, krypton, or xenon. 

The primary reasons for choosing double glazing include:

  • Energy Efficiency: Double glazing acts as a thermal barrier, reducing heat transfer between the inside and outside of your home. This means that during the winter, it keeps your home warmer, reducing the need for heating. In the summer, it prevents excess heat from entering, helping to keep your home cool. 
  • Noise Reduction: Double glazing is also effective at reducing external noise, creating a quieter and more peaceful indoor environment. This is particularly valuable if you live in a busy urban area or near a noisy road.
  • Enhanced Security: The dual panes of glass are harder to break than single glazing, making your home more secure. Many double glazing companies also offer additional security features, such as reinforced frames and multi-point locking systems.
  • Condensation Prevention: Double glazing helps reduce condensation on your windows. This can prevent mold and mildew growth, improving indoor air quality.
  • Increased Property Value: Installing double glazing can increase the value of your home, making it more attractive to potential buyers. It’s also a sought-after feature for renters.

Comparing Double-Glazing Companies

When searching for the best local double-glazing companies, here are the key steps to help you find the right company for your home:

  • Research: Start by researching the local companies in your area. You can use online search engines, directories, and review websites to identify potential candidates.
  • Recommendations: Ask for recommendations from family, friends, and neighbors who may have had double glazing work done. Their firsthand experiences can provide valuable insights.
  • Online Reviews: Check online reviews and ratings on platforms like Trustpilot, Google Reviews, and Yelp. Reading reviews from previous customers can give you a sense of the company’s reputation and customer satisfaction.
  • Visit Showrooms: If possible, visit the showrooms of local double glazing companies. This allows you to see their products, discuss your needs with experts, and get a feel for their offerings.
  • Request Quotes: Contact multiple companies to request quotes for your project. A detailed quote should include the cost of materials, labor, any additional services, and any special offers or discounts.

If you want the hard work done for you for free, just tell Warmable the key details about your home and your requirements and we will compare providers for you. Our service matches you with a local engineer who can give you a free, objective quote. Just fill in our quick form and one of our team will reply promptly.


Where Can I Get Double Glazing in the UK?

Warmable can help you get double glazing from the best companies in the following places and anywhere else within the UK:

  • London: Westminster, Kensington and Chelsea, Camden, Tower Hamlets, Croydon
  • Birmingham: Edgbaston, Solihull, Sutton Coldfield, West Bromwich
  • Manchester: Salford, Trafford, Stockport, Bolton
  • Glasgow: West End, South Side, East End, North Glasgow
  • Leeds: Headingley, Roundhay, Horsforth, Alwoodley
  • Liverpool: The Wirral, Everton, Toxteth, Aigburth
Where Can I Get Double Glazing in the UK?

Warmable Can Help Find You the Best Deals for Double Glazed Windows in Your Area

Selecting the right double glazed windows for your home is essential, and finding the best deals is equally important. At Warmable, we specialise in connecting homeowners with certified and trusted double glazed window fitters in your local area.

Our network of professionals ensures top-notch installations and quality service. We believe in transparent and fair pricing, and all quotes we provide are obligation-free. When you choose Warmable, you’re choosing a sustainable, cost-effective, and eco-friendly solution for your home.

Contact us today to explore your double glazed window options and embark on a journey toward energy-efficient and stylish living.

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