Best 5 window replacement specialists in London that blends tradition with innovation
There’s something about London windows that makes them stand out. They frame city views while guarding against the chill, blending heritage, function, and design.
Still, finding the right expert to install or restore them isn’t always simple. With so many specialists claiming top-notch service, it’s easy to feel overwhelmed or second-guess your choice.
That’s why we’ve gathered some of the most recommended window fitters in London. These are professionals known for quality work, reliable service, and striking finishes. Ready to meet them?
What is the average cost of window replacement in London?
The average cost of window replacement in London ranges from £500 to £3,000 per window, depending on size, material, and glazing type. UPVC windows typically cost between £500 and £1,500, while aluminum and timber options range from £1,000 to £3,000. Additional factors like installation complexity, listed buildings, and custom designs can increase the overall price.
1. 5 Star Glazing Ltd
Address: Unit 1, AV House, Wallingford Rd, Uxbridge
Contact: +44 1895 347010
Mail: [email protected]
Business hours: Monday to Saturday, 8AM – 6PM
This company has built a reputation for delivering standout timber windows and aluminum doors.
Their projects often catch attention for clean lines and well-balanced proportions, which speaks to their skill in blending aesthetics with function. A lot of the positive feedback points to their precise craftsmanship, especially in tricky custom installations where details really matter.
Some customers note that communication can feel a bit slow during longer projects, but most seem happy to wait for the quality results. Their portfolio leans toward sleek, contemporary styles, though they handle traditional designs just as confidently.
What stands out is their ability to really elevate a space, not just fill it with new windows and doors. They’re actually not the cheapest option, but those who choose them generally feel the investment is worthwhile.
Overall, they’ve carved out a solid place as a trusted name for bespoke, high-end window and door installations.
Good quality of work
“We have been working with Mr. Jaffary for our glazing requirements. We are very happy with the prices and quality of work. We have worked with other glazing companies before but with the service we get from 5 Star with Mr. Jaffary, we are very satisfied and look forward to working with them for a long time for our projects.”
- Janam Satra, Google Review
Hands-on
“Anil and the team installed some sash windows and french doors in my flat. Was so pleased with the exceptional service and quality of the windows and doors. They were always on hand for any questions I had and were quick to get them installed. After speaking to a few different companies I am so glad I went with 5* Glazing Ltd and would definitely recommend them to a friend. Thank you.”
- Sarah Iley-Hazelgrove, Google Review
2. London and local Windows Design Ltd
Address: 14 The Broadway Stoneleigh, Stoneleigh, Epsom
Contact: +44 7921 024392
Mail: [email protected]
Business hours: Monday to Sunday, 24hours
London and Local Window Design Ltd has made its mark by focusing on UPVC windows and bifold door systems that combine sharp design with dependable performance.
Their work often appeals to homeowners who want something that feels modern but isn’t flashy. Expect clean lines, smooth operation, and good insulation.
Reviews highlight their ability to deliver on both looks and function, especially with energy-efficient features that suit city living.
Some customers mention that the installation process can fall slightly short of expectations. Their pricing sits comfortably in the mid-range, making them accessible without compromising quality.
One detail that stands out is their knack for creating spaces that feel brighter and more open, thanks to their well-designed bifold doors.
They aren’t necessarily a fit for those after highly bespoke designs, but for anyone looking for sleek, low-maintenance solutions, they tend to deliver consistently.
First class service
“First class service from Johnny and Sam. From the initial quoting process to the seamless fitting, we were very happy Professional and efficient. Rear of the house’s 2 x windows now look great. Would recommend it 100%.”
- Chris Whiting, Google Review
Good workmanship
“L&L Windows delivered exceptional workmanship, completing the job professionally and on time. Johnny, the owner, went above and beyond to accommodate every request, ensuring a seamless experience.”
- Arman Basmajian, Google Review
3. Nation Windows Ltd
Address: 3 Court Rd, Ickenham, Uxbridge
Contact: +44 800 001 6415
Mail: [email protected]
Business hours:
- Monday to Friday, 8AM – 5PM
- Saturday, 9AM – 2:30PM
Nation Windows Ltd tends to fly a bit under the radar but has built steady trust, especially among homeowners tackling loft conversions or tricky roof window projects.
Their work on double-glazing repairs also gets solid praise, particularly for attention to insulation and weatherproofing. They seem to focus more on function than flashy aesthetics, though their installations still look sharp and unobtrusive.
A few reviews mention longer wait times between the survey and installation, which can test patience, but the finished product generally holds up well over time.
They’re also a go-to for small but essential jobs like window resealing and draft-proofing, which many bigger firms overlook. Their pricing stays competitive, and they have a reputation for honest, straightforward service.
If your project involves awkward angles or unusual spaces, they’re one of the names that tend to come up for reliable, no-fuss solutions that last.
Prompt
“Pam was extremely professional, prompt and always responded to our queries along the way. The fitters were very tidy and professional and did great work. I feel we paid a fair price and would go back to Pam in the future when we need our other windows and door replaced.”
- Katherine Moreton, Google Review
Good quality
“Good quality skylights and patio doors were delivered and installed. Had a few issues regarding the timing and completion of the installation but in the end everything was taken care of in a courteous manner”
- Pritesh Patel, Google Review
4. Peerless Windows Sales Ltd
Address: Heritage Quarter, 129 Northfield Ave
Contact: +44 20 8567 6000
Mail: [email protected]
Business hours:
- Monday to Friday, 9:30AM – 5PM
- Saturday, 9:30AM – 4PM
Peerless Windows Sales Ltd has carved out a niche in aluminum and patio door installations, often attracting clients who need reliable solutions for wide openings and larger spaces.
Their double-glazing work is frequently mentioned in reviews, mostly for its neat execution and smooth installation process. They seem to prioritize efficiency without cutting corners, which appeals to homeowners who want the job done with minimal fuss.
While their designs lean toward functional over flashy, there’s a noticeable emphasis on durability, especially in high-traffic areas like patio doors.
A few customers have pointed out that their style options can feel somewhat limited, particularly if you’re after something highly distinctive or decorative.
Still, their ability to handle big, complex installations without issue is a key strength. They’re often seen as a dependable choice for straightforward, solid window and door projects that need to perform well over time.
5. Richmond Windows Ltd
Address: 54 Kew Rd, Richmond
Contact: +44 20 8948 0074
Mail: [email protected]
Business hours:
- Monday, Wednesday & Friday, 8AM – 5PM
- Tuesday & Thursday, 8AM – 4:30PM
Richmond Windows Ltd tends to attract homeowners who want reliable UPVC window installations and careful conservatory work.
Their projects often stand out for how well they balance modern performance with traditional charm, making them a good option for homes that need to retain their character while improving energy efficiency.
Reviews often highlight their attention to detail, particularly in older properties where mismatched finishes can easily ruin the look. They seem especially skilled at creating smooth transitions between new additions and existing structures.
That said, their focus leans more toward subtle, understated results rather than bold standout designs. A few clients noted that their timelines can shift slightly on more complicated projects, though most appreciated their honesty about it upfront.
Overall, their consistent craftsmanship and ability to blend old with new make them a solid choice for those who care about both function and preserving the feel of their home.
Good pricing
“First class from start to finish! We have just had new patio doors fitted by Richmond Windows and they were so great to deal with. They were really competitive and prompt in their quote and pricing, kept up to date with the order throughout and the quality of the installation itself was superb. Their work was so tidy there was not a single blip of paintwork needing touch up after the install. 100% recommend this company!”
- Terry Smith, Google Review
Best quality
“In April and May 2025, Richmond Windows installed double glazed windows in two flats we have locally in Richmond. The products they installed were of the best quality technical specification at a very competitive price. The tenants could not praise the workmanship of the installers and were astonished at how efficient the guys were, including leaving the premises in a tidy, clean state upon completion. I have no hesitation in recommending this company for window installation.”
- Alex Hawkins, Google Review