J Paterson The Window Company

London5.0· 256 reviews · 4 sources
Companies House
Active incorporated business
Trust score
90out of 100
Rating5.0★
Review volume256
Source diversity4 sources
VerificationListed

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About

With 246 reviews over 13 years of service, J Paterson The Window Company in London is a well-discussed name in the industry. Positive reviews frequently commend their professionalism, with one customer highlighting the "zero pressure sales pitch" and another praising the "professional and clean tidy job" done by their fitters. However, not all experiences are positive, as some reviews express dissatisfaction with aftercare services, citing issues with warranty support. Serving the London area, their work has been described as transformative by clients who appreciate the quality of their installations.

Reviews · public evidence

What customers say

5.0out of 5
256 reviews in public evidenceCross-checked across 2 sources
Checkatrade256 reviews · 4.9 avg
Which? Trusted Traders65 reviews · 4.8 avg

Highlights

"Just wanted to leave a thumbs up here for this great company. No pushy saleman style, just straightforward measuring and explanation, choice in glass and quick responses to emails. Came when promised and hugely impressed me on the day. The two chaps who came were friendly and polite and worked like trojans, being at pains to leave the house weather-tight before leaving on the first day, when to my surpirse they managed to fit all four windows in place by 2.30 pm and popped back to finish the insides the next morning and were done by 10.30! Lovely windows! Look so good! Heartily recommended!"

CustomerCheckatrade5.0 rating

"Very pleased with newly fited patio doors a new kitchen door. Neat tidy work and excellent quality fittings. Involved cutting out a lot of bricks but John and Andrew seemed to somehow keep dust and debris to a minimum. Delighted with end result!"

CustomerCheckatrade5.0 rating

"This company replaced the roof of my conservatory and fitted a replacement window. Both jobs were completed to the highest standard by friendly and competent staff. The work included plastering and fitting lights. I have used the firm before for replacing windows and this gave me confidence to use them for the big job of the new conservatory roof. I have no hesitation in recommending them."

CustomerCheckatrade5.0 rating

Detailed reviews

Checkatrade5.0 / 5 ·

Just wanted to leave a thumbs up here for this great company. No pushy saleman style, just straightforward measuring and explanation, choice in glass and quick responses to emails. Came when promised and hugely impressed me on the day. The two chaps who came were friendly and polite and worked like trojans, being at pains to leave the house weather-tight before leaving on the first day, when to my surpirse they managed to fit all four windows in place by 2.30 pm and popped back to finish the insides the next morning and were done by 10.30! Lovely windows! Look so good! Heartily recommended!

Checkatrade
Checkatrade4.8 / 5 ·

Paterson windows conducted an excellent installation of quality windows. Their fitters, Tim and Luke were very courteous, proficient and tidy. We were extremely impressed with the work done.

Checkatrade
Checkatrade0.8 / 5 ·

John Paterson "The Window Company" promote amazing customer service and a 10 year warranty with their products. 4.5years after fitting a new composite door at our home, the door bowed and warped pulling the frame away from the house. John Paterson made little effort with the manufacturer to rectify the issue and I had to do this myself. Following a thorough investigation by them, it transpires the door was not fitted as per manufacturer guidelines. John Patterson is unwilling to help, ignores my contact and therefore his 10 year guarantee to worthless.

Checkatrade
Checkatrade5.0 / 5 ·

Very pleased with newly fited patio doors a new kitchen door. Neat tidy work and excellent quality fittings. Involved cutting out a lot of bricks but John and Andrew seemed to somehow keep dust and debris to a minimum. Delighted with end result!

Checkatrade
Checkatrade5.0 / 5 ·

This company replaced the roof of my conservatory and fitted a replacement window. Both jobs were completed to the highest standard by friendly and competent staff. The work included plastering and fitting lights. I have used the firm before for replacing windows and this gave me confidence to use them for the big job of the new conservatory roof. I have no hesitation in recommending them.

Checkatrade
Checkatrade5.0 / 5 ·

Excellent quality of product and workmanship … fitting was amazingly quick (just 2 days!) and it was a big job. Totally professional service from survey to completion … very impressed n highly recommend.

Checkatrade
Checkatrade5.0 / 5 ·

An excellent job again, can’t fault them in anyway.

Checkatrade
Checkatrade5.0 / 5 ·

We have used The Window Company before so gave John a call when we needed the Windows and Doors replaced on our new house. On both occasions we got a very professional service, competitive price and an excellent quality of workmanship to a very high standard Highly recommended.

Checkatrade
Checkatrade5.0 / 5 ·

The back door had to be fitted between water pipes, electric wires and a gas pipe. The front door was simpler. The work was done in terrible weather and was completed within the estimated time. Very happy with the results and would definitely use this company again (had all windows in the house replaced by them just over 3 years ago)

Checkatrade
Checkatrade5.0 / 5 ·

New front door fitted the whole process from ordering to fitting was easy and carried out professionally Would definitely use again

Checkatrade
Checkatrade5.0 / 5 ·

A thoroughly professional job done to the highest standard. Steve was a real hard worker, prompt and polite. The windows look great and have made so much difference to the look of the house. Highly recommended.

Checkatrade
Checkatrade5.0 / 5 ·

The fitter, Peter, was very efficient and friendly. The finishing was perfect and the site was cleaned.

Checkatrade
Checkatrade5.0 / 5 ·

Another 2 windows fitted by Steve, an excellent job once again, I can’t fault his work or the company in any way.

Checkatrade
Checkatrade5.0 / 5 ·

John and team are reliable, courtious, and workmanship was excellent. Steve the fitter was very polite and tidy. Lovely finish to the work completed.

Checkatrade
Checkatrade5.0 / 5 ·

The work was difficult to complete because with each job, terrible bodges were discovered from the work of the previous owners. The work was therefore remedial before the guy could actually crack on - and crack on he did - kept me informed, explained, made up time, stayed late, did an amazing job all round, and made good years of errors. He's a superhero. Really pleased with the results. Asked for a quote for more work even before this first job was done. Outstanding. They were recommended by a trusted friend and I'd recommend them myself.

Checkatrade
Checkatrade5.0 / 5 ·

Very Good service. Easy to obtain quote and excellent fitting. I have used 3 different window companies on my current property, and J Paterson were easily the best. Professional, tidy, no gimmicks, and most importantly the quality of the fitting is great. My property is rendered with stone chips then painted so any damage shows and needs to be made good, Steve the fitter managed to remove all the upstairs windows with barely any evidence of their removal. Everything was made good beneath the windows too. I have had other fitters here who left a hole under my French Doors. No issues here!

Checkatrade
Checkatrade5.0 / 5 ·

Complete window replacement throughout house So glad John patterson was recommended to us by friends tried a couple of big company's but was not a patch on Pattersons Was given a very competitive quote which was a lot better than competitors Work started on time as agreed Pete the fitter was an absolute diamond very hard working always tidied up at end of day and anything we did not understand he took time to explain/ show what he was doing before starting work All in all absolutely over the moon with the finished result and highly recommended

Checkatrade
Checkatrade5.0 / 5 ·

Really pleased we decided to go with J.Paterson’s to have all our windows replaced. Excellent communication, quick and clear. Answered all our questions before going ahead with the job in a thorough and precise manner. Delivery and fitting was much sooner than expected and can’t fault the standard at all. I’m pretty fussy and they look great. Fitter did an excellent job, very professional and pleasant to have around, friendly and tidy. Completely happy to recommend to others.

Checkatrade
Checkatrade5.0 / 5 ·

This is my 2nd time using Paterson’s and just like the first time an excellent job done, can not fault them in any way.

Checkatrade
Checkatrade5.0 / 5 ·

Excellent timing and workmanship would highly recommend. Charged less than quoted excellent value would definitely use again told me exactly what was wrong and fixed within the hour

Checkatrade
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Companies House registration

Active incorporated business

Active

J Paterson The Window Company Ltd is linked to a Companies House entry. This shows the business registration, not evidence of workmanship or service quality.

Legal nameJ Paterson The Window Company Ltd
Company number11923833
IncorporatedNot listed
Registered activityGlazing
Official checkListed
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Public evidence checks

Trust checks and red flags

Public evidence shown
Public review evidence5.0★ from 256 public reviewsAcross Checkatrade, Which? Trusted TradersCheckatradeCompanies HouseCompanies House OfficersWhich? Trusted Traders
Sources

Every signal, traced to its origin

4 named sources
Public evidence checks

What's strong, and what to check yourself

Strong signals
Rating: 5.0★
Review volume: 256
Source diversity: 4 sources
!Worth checking yourself
!Verification: Listed
Good to know

Common questions about J Paterson The Window Company

What do customers say about J Paterson The Window Company?

J Paterson The Window Company has 256 public reviews, averaging 5 out of 5, gathered across 4 independent sources. You can read the individual reviews and where each came from in the reviews section above.

How do I know J Paterson The Window Company's reviews are genuine?

J Paterson The Window Company's 256 public reviews are gathered and cross-checked across 4 independent public sources. Reviews spread across several named sources are harder to fake than a single polished page. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show where every review came from rather than selling rankings, so you can weigh the evidence for yourself.

Is J Paterson The Window Company a registered business?

J Paterson The Window Company Ltd is a registered business on Companies House (company number 11923833), listed as active. This confirms the legal registration of the business — not evidence of workmanship or service quality.

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