Andy did a great job installing our new windows and door, very happy with the quality and fitting service. Would use GM windows & doors again in a heartbeat. Bryony also has been very responsive ov... See more
Company replied
While we don't verify specific claims because reviewers' opinions are their own, we may label reviews as "Verified" when we can confirm a business interaction took place. Read more
To protect platform integrity, every review on our platform—verified or not—is screened by our 24/7 automated software. This technology is designed to identify and remove content that breaches our guidelines, including reviews that are not based on a genuine experience. We recognise we may not catch everything, and you can flag anything you think we may have missed. Read more
Review summary
Created with AI, based on recent reviews
What people talk about most
Reviews shaping this summary
Great communication and service, communication over WhatsApp with Bryony was great. They provided a formal quote quicky, came out to measure up when they said they would and fitted doors within the ti... See more
Company replied
Just had new bedroom bay and bathroom replacement windows fitted. Competitive price and efficient service. Slight wait for install but worth it for high quality finish. Fitters took all waste away an... See more
Company replied
just had 6 replacement windows fitted. The whole process was efficiently done from the initial request, all the way through to final completion. Staff were great,from admin side to the fitters. Done i... See more
Company replied
Company details
Written by the company
George Martindale started G M Windows & Doors Ltd the Bolton-based double-glazing windows and door replacement business in March 2018. He brings a passion for delivering outstanding work and a wealth of knowledge to support it. George started in the industry while working for his father’s window fitting company Martindale’s, in Bolton. There, he gained immense insights into the best techniques and quality of materials and how he began establishing a solid network of contacts within the trade. His natural eye for detail and seeing first-hand how to run a successful business gave George the confidence to venture independently. What started as just George, a van, and word of mouth, is now a business with over 100 5 Star reviews. The first apprentice is now one of the top fitters in the region, and the fleet of vehicles is continuously expanding. You can find various services, from installing new doors and windows to repairing and replacing existing ones. G M Windows & Doors have an extensive range of products, such as the best composite doors, window replacement, casement windows, and double glazing, to find the perfect solution for your home.
Contact info
Unit 1 Weston Street, BL3 2SB, Bolton, United Kingdom
- 01204866508
- info@gm-wd.co.uk
- gm-wd.co.uk
5.0
Excellent
470 reviews
No recent history of asking for reviews
This company hasn't invited customers recently, so reviews may not be representative
How this company uses Trustpilot
See how their reviews and ratings are sourced, scored, and moderated.
Both patio door fitted with speed
Both patio door fitted with speed, very please with result!
May 15, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Catherine, thank you for a great review! 👍
Excellent job done by everyone involved…
Excellent job done by everyone involved from start to finish. Will definitely recommend to friends and family.
We are so happy with the end result.
May 7, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Suzanne, thank you for a lovely review! thank you for the recommendation and we are pleased you are happy with the end result! 😁
Professional and friendly service
Professional and friendly service. Quality of door is perfect, service is fast, amazing value - would highly recommend
May 13, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Halima, thank you for a great review!👍 it's been a pleasure to work on this job for you!
Very happy with our installation
Very happy with our installation. We had all the windows at the front of our house replaced, with two sets of bay windows, a challenging job. Some post installation support was required and the response was superb from GM Windows (something that a lot of the household name companies seem to struggle with). I will definitely use again. Thank you so much.
April 14, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Jon, Thank you so much for your lovely review!
We're delighted to hear that you're happy with your new windows and the service you received from our team.
Thank you for your kind words and for choosing G M Windows & Doors. We look forward to working with you again in the future!👍
G M Windows were brilliant
G M Windows were brilliant. Really good communication from the start and right through to the end. Price was excellent as we had 5 windows replaced, 1 of which we decided to make smaller. Their builder was of high quality also. A new front door and replaced wooden cladding for uPVC.
Bryony and the team were professional, polite and courteous. The lads loved meeting our dog and gave him plenty of attention. I highly recommended G M Windows and will be passing their number to friends who require work
May 8, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Jon, Thank you so much for your fantastic review!
We're delighted to hear that you were happy with the communication, workmanship, and value we provided throughout your project. It was a pleasure helping with your new windows, front door, and cladding, and we're pleased everything met your expectations.
The lads certainly enjoyed meeting your dog too!
Thank you for your recommendation and for passing our details on to friends and family. Your support means a lot to us 😁
Excellent service with a brilliant job…
Excellent service with a brilliant job on a tricky door, very pleased with the results and would recommend GM Windows
May 13, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Tracey, thank you for leaving a review! Its been a pleasure to work on this job & thank you for the recommendation! 😊
Amazing service from start to finish
Amazing service from start to finish, Bryony was so helpful throughout and the lads who came to do the fitting were great - highly recommend!
May 8, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Lois :) Thank you for a great review! Thank you for your recommendation and for choosing G M Windows & Doors. It was a pleasure working with you!
Excellent experience with G M Windows &…
Excellent experience with G M Windows & Doors, communication was great with Bryony over WhatsApp and the fitting was super quick and seamless. Very happy, thank you!
April 23, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Charlotte :) Thank you so much for your lovely review!
We're delighted to hear that you had an excellent experience with us and we're glad the installation was quick and seamless.
Thank you for choosing G M Windows & Doors. We really appreciate your support and hope to work with you again in the future!
Clear and responsive communication…
Clear and responsive communication throughout. Great quality, great service left no mess! Would 100% use again! Very happy!
April 21, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Peter 😁 Thank you so much for the great feedback! We’re really pleased you were happy with the communication, quality, and service. 😊
Replacement windows
Friendly and professional throughout. Did a great job.
April 7, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hello David 😊Thank you for your kind words! We’re really pleased you found the team friendly and professional, and that you’re happy with the job 😊
New external door
The door fitting work and associated organisation of the job was first class. Would definitely recommend the company.
April 14, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Ian 😊Thank you for the fantastic feedback! We’re really glad to hear you were happy with both the installation and how everything was organised. We truly appreciate your recommendation 😊
Great communication and support…
Great communication and support throughout. New window is perfect.
April 8, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Luke, Thank you so much for your kind words! We’re really pleased to hear you’re happy with your new window. It was a pleasure working with you, and we appreciate you taking the time to leave a review 😊
just had 6 replacement windows fitted
just had 6 replacement windows fitted. The whole process was efficiently done from the initial request, all the way through to final completion. Staff were great,from admin side to the fitters. Done in advance of original date. The fitters were very good and did an excellent job , including cleaning up at the end to leave us very satisfied with the whole job. Would highly recommend GM Windows.
April 9, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Mr Foster, Thank you so much for your lovely review 😊 We’re really pleased to hear you’re happy with your new windows and that the whole process was smooth from start to finish.
It’s great to know the team were efficient, friendly, and left everything clean and tidy—we’ll be sure to pass your kind words on to both the office staff and fitters.
Thanks again for your recommendation of GM Windows and Doors, it really means a lot to us!😊
Excellent quick response to my query. Courteous staff. Good price.
Go windows responded to my query extremely promptly
It was only a small job but others either didn’t reply or didn’t turn up.
Neil was courteous and did a good job.
Price excellent. Would recommend.
April 10, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hello Loraine, Thank you for your lovely review 😊& thank you for your recommendation, its been a pleasure! 👍
Rear Garage window and door
From my first enquiry to getting the final bill, I would highly recommend the service, quality of product and the staff all round have been excellent. Thankyou for a great job.
April 10, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Keith, thank you for the lovely review! 😊we're glad you had a fab experience with us from start to finish!
Its been a pleasure, thanks again!👍
Excellent French Door Installation
Excellent French Door Installation – Highly Recommend GM Windows and Doors
We recently had French doors fitted, including a brick-out, by GM Windows and Doors, and we couldn’t be happier with the result. From start to finish, the service was professional, efficient, and well organised.
The brick-out work was completed neatly and with great attention to detail, and the new French doors look fantastic. The fit and finish are excellent, and everything was left clean and tidy once the job was completed.
The installation was completed to a very high standard and has made a huge difference to both the look and feel of our home.
We would definitely recommend GM Windows and Doors to anyone looking for quality workmanship and reliable service.
Thanks to George and the lads and also would like to thank bryony for keeping us up to date and getting the doors booked in .
April 2, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Grant! Thank you so much for your amazing review 😊 We’re really pleased to hear you’re happy with your new French doors and the brick-out work, and that everything was completed to a high standard and left tidy.
Thanks again for recommending GM Windows and Doors, it really means a lot 😊
Replacement of 7no windows
Complete survey carried out for 7no windows then competitive detailed quote received which avoided a return to measure.Bryony and George gave us an excellent service and kept in touch throughout
George advised on a suitable frame supplier to match the existing window profiles from the survey photos.
Installation started and completed on time and the team were very friendly and tidy.
Minor problem with one glazed unit scratched/material trapped was sorted out within a couple of days with no quibble.
I would definitely recommend GM Windows and Doors.
March 18, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hello Kevin 😊 Thank you so much for your kind and honest review.
We’re really pleased to hear you’re happy with the service from start to finish, and that the installation was completed on time and to a high standard.
It's been a pleasure! and thank you for the recommendation😊
Top quality windows at a great price
Top quality windows at a great price.
Fitters were very tidy and did a fantastic job
March 23, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Emma 😁 Thank you so much for your kind words 😊 We’re really pleased to hear you’re happy with the quality of the windows and the price.
We’ll pass your lovely feedback on to the fitters too.
Thanks again for taking the time to leave a review and for recommending us!
So pleased with my new front door
So pleased with my new front door - made bespoke to fit perfectly. Stylish and great quality. Bryony kept in touch throughout the process and kept me updated with progress - Kyle was excellent fitting the doors. Smooth process - couldn’t be happier - 100% recommend 💜
March 20, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey 😊 Thank you so much for your lovely review 💜 We’re really pleased to hear you’re happy with your new front door and that everything went smoothly for you.
Thanks again for the recommendation, it means a lot!
Purchase of Sliding Patio Doors
I was very impressed with the company from the start. They were easily contactable, extremely helpful and gave me a competitive price. The 2 lads who came to fit the patio doors were very respectful of my property, worked efficiently and tidied up after themselves. I would have no hesitation in recommending this company.
March 16, 2026
Unprompted review
The Trustpilot Experience
Anyone can write a Trustpilot review. People who write reviews have ownership to edit or delete them at any time, and they’ll be displayed as long as an account is active.
We use dedicated people and clever technology to safeguard our platform. Find out how we combat fake reviews.
Learn about Trustpilot’s review process.
Here are 8 tips for writing great reviews.
Verification can help ensure real people are writing the reviews you read on Trustpilot.
Offering incentives for reviews or asking for them selectively can bias the TrustScore, which goes against our guidelines.