The London Sash Window Company Reviews

Hazal 2026.05.15

     

I’m really happy that I chose London Sash Window company on the recommendation of my parents. We replaced old single-glazed sash windows with heritage-style double-glazed sash windows and kept the original window frames, as they were in good condition. This saved us money and there was no need for council planning permission as we did not replace the window frames. Ann in the Sales department was fantastic and the reason we initially went ahead. Max heading the installation team was customer orientated and excellent with after sales care too. Ryan was the lead installer and he and the team did excellent work. Would definitely recommend this company. Thank you.

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Tigerlily Greenbaum 2026.05.14

     

Great communication throughout and extremely happy with the windows! During installation the team were super tidy. Couldn’t recommend enough.

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Tuli Saha 2026.05.12

     

I had draught proofing and overhaul of my timber sash windows. The quality of service was exceptional. They came on time, covered up the whole area and efficiently did the work. It was tidy, quick and high quality work. Prior to this the customer service was exceptional as I explored different insulation options.

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Gerald Roberts 2026.05.06

     

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Rebecca and Gethin Anthony 2026.04.09

     

We've just had all of the old PVC windows in our Edwardian terrace replaced and are absolutely delighted. It looks like a different house! Absolutely recommend The London Sash Window Company - true experts with meticulous attention to detail, took time to explain everything and ensured minimal disruption during installation

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Sarah Winsor 2026.03.10

     

Tommaso has done a fantastic job fitting my new kitchen sash window and back door. They look amazing!

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Sam Holt 2026.02.16

     

The guys were first class, clear quotation, great work and care on the finished product. We now have some beautifully restored windows. Would use again without hesitation.

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Rachel Mansson 2026.02.04

     

I was dreading the mess and disruption of replacing all the original sash windows in my house, but Greg and team were fast efficient and helpful I am delighted with all 7 windows and the effects of a warmer house are tangible. A great result.

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Simon Inchley 2026.01.26

     

We are thrilled with the quality of the product, and the installation team were fantastic...a really helpful and great service, and zero mess

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Neil Kaiser 2026.01.20

     

Great! We had new sash windows installed and existing ones refurbished and London Sash Window Co were brilliant throughout from the initial quote and surveys to the installation. The quality of the finished windows is fantastic.

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Hebe Foster 2025.12.15

     

Professional, good-quality and efficient replacement of wooden sash windows with equivalent double-glazed, in a conservation area so with a lot of regulations and requirements. The windows are great and I can already feel the difference!

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Rebecca Cook 2025.12.07

     

We had a great experience with the London Sash Window company. Love our windows and the installation process was very well managed. The only small area for improvement would be better communication. It was fine but had to do a bit of chasing in the beginning. Was worth it for the value for money/

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Wojtek Konczalik 2025.11.14

     

Seamless execution and really high quality finish. The whole team have been responsive and supportive from start to finish. I required support for old victorian wooden sash windows to be upgraded to double glazed windows in a London conservation area. The team not only took charge of the planning application, but also manufactured and installed the windows in a timely fashion all the while keeping me in the loop. Cannot recommend enough.

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Liz Lyon 2025.10.14

     

Fabulous service from Matthew, Maxence, Paul and the rest of the team at London Sash Window Company. Had all my sash windows at the front of my house restored, repaired and draught proofed and I am really really delighted with the result. I would highly recommend this team to 'overhaul' your windows and they really do provide expert advice on what is needed. Very happy with the work and the result!

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Alexandra Gillies 2025.10.07

     

This was my first experience replacing old wooden windows with new uPVC in a shared freehold block, which was a bit more complex. However, the sales team quickly provided a stunning and comprehensive brochure, and Luca was fantastic in the beginning, delivering quotes and necessary paperwork and suggesting a visit to the charming Sash Windows showroom near Clapham Junction, which we visited. A minor communication mix-up regarding the survey was resolved by Jake, and the installation by Robert, with a quality/satisfaction check by Elvin, went very smoothly, with the Sash Windows team taking care of all the clean-up. I am thrilled with the finished result; the new double-glazed windows look beautiful, fit perfectly, and significantly enhance sound and energy efficiency. I've mentioned a few names, but my gratitude extends to the entire team. Sash Windows London are a lovely family-run company providing a personal, high-quality service. Highly recommended.

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Batya Leon 2025.10.06

     

Very happy with the outcome great job Excellent service

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Emma Burrows 2025.09.28

     

Excellent service, reliable workmen, a great job and a lovely company to work with!

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The Templeton Family 2025.09.13

     

We bought a beautiful Victorian house that needed some serious restoration and we were recommended the London Sash Company. Safe to say they didn’t disappoint, we had all of the original sash windows replaced with double glazed sash windows, with some of the sashes needing full replacement. They replaced every window in the house and worked with our builders to hit the right schedule. The attention to detail, craftsmanship, and subsequent after care was all exceptional. If you’re looking to restore or bring back the original detailing and beauty of Victorian sash windows, I highly recommend Max and the team.

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Tim Billington 2025.07.26

     

Very well run company. Very pleased with the whole process and outcome

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Paul Colbeck 2025.07.11

     

This company have now replaced the original 1861 sashes at both the front and rear of my flat - I would recommend them very highly for the quality of the manufacture and installatioin and the clarity of communication.

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