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
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Review summary
Created with AI, based on recent reviews
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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
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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
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Excellent customer service
The fitters were friendly and worked non-stop to get the door fitted quickly. They left the area clean and tidy (cleaner than it was to begin with)! Thank you so much
February 16, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Natalie, Thank you so much for your lovely review! 😊
We’re really pleased to hear you were happy with the service and that the team took good care of everything from start to finish. I’ll be sure to pass your kind words on to the fitters — they’ll really appreciate it!
Thanks again for choosing us!
Amazing service and fitting
Amazing service and fitting. The admin team are very easy to talk to and very helpfull and the fitting team are lovely and quick at the job. overall very happy with my front door. Would highly recommend.
February 12, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Chloe 😊 Thank you so much for your lovely review!
We’re so pleased to hear you’re happy with your new front door. I’ll be sure to pass your kind words on to both our admin team and the fitters — they’ll really appreciate it!
Thanks again for the recommendation, it means a lot to us ✨
Fabulous!
Excellent service! Such a friendly and helpful team. Explained the options to me and we're on hand to help on WhatsApp.
They were superb at fitting my new door - covering things in my house and cleaning up after themselves.
I'm so pleased with my new door it looks fantastic and being an old cottage, know this wasn't the easiest!
Would highly recommend 😊
February 12, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Harriet, Thank you so much for your lovely review! We’re delighted to hear that you were happy with both the service and your new door. It was a pleasure working on your cottage.
We’re especially glad you felt well looked after throughout the process and that the team left everything clean and tidy for you.
Thank you again for your recommendation – it truly means a lot! 😊
Great service
Kept up to date throughout, very accommodating to n making any changes and the fitting process ran to time & cost. Very happy with the windows and fitters were very conscientious while in the house. Great team!!
February 12, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Matthew! Thank you so much for your lovely feedback! 😊
We’re so pleased you felt well looked after throughout and that everything ran to time and cost. It’s great to hear you’re happy with the windows and that the team took good care while working in your home. We really appreciate your support!
Absolutely fantastic service from…
Absolutely fantastic service from everyone I have spoke to and dealt with at GM doors . The 2 lads that came out to fit our new door and windows were brilliant and did an amazing job. Will definitely recommend to everybody
February 6, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey William! Thank you so much for the amazing feedback! 😊
We’re delighted you’re happy with the service and the installation — I’ll pass your kind words on to the team. We really appreciate the recommendation!
Faultless service!
I couldn't have had a more positive experience. I went with GM Windows because they were only one of two installers of Palladio doors, but their service was faultless. Very responsive over Whatsapp to address questions or amends to the order, they were also willing to hold onto my door until I was ready, which was hugely appreciated and made my renovation programme much easier. The installers were very polite and accommodating, and I'm very pleased with the quality of install!
February 4, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Emma 😊 Thank you so much for your kind words! We’re delighted to hear you had such a positive experience with us. It was a pleasure helping with your renovation, and we’re glad being able to store your Palladio door made things a little easier for you.
I’ll be sure to pass your lovely feedback on to the installation team as well. Thanks again for choosing GM Windows, and please don’t hesitate to reach out if we can help with anything in the future!
First class service
First class service. Agreed the spec and timescales, everything then carried out as agreed. The guys who did the job on the day were excellent and cleaned up after themselves. Stress free, would definitely recommend.
January 27, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Peter, thank you for a lovely review. We are buzzing that you had a fab service with us start to finish! Thanks for the recommendation, it's been a pleasure 😊
Windows and doors
GM have provided all our windows and doors and made the process as easy as possible. We are extremely happy with the end result and they have really changed the look of the house. They are reliable and would highly recommend. Bryony is fantastic and will answer any questions you may have and will keep you updated through the whole process. The team are brilliant and will do a grand job.
January 26, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Jess😊 Thank you for such a lovely review! We’re so pleased to hear how happy you are with your new windows and doors and that they’ve made such a difference to the look of your home. It’s great to know the process felt easy from start to finish. Thanks again for the recommendation!👍
Bryoni and George were fantastic to…
Bryoni and George were fantastic to deal with. The answered all our questions, we’re always available and did the job on time and on budget. Would highly recommend them.
March 13, 2025
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Neil, thank you for a lovely review! We're buzzing that everything went smoothly from start to finish! Thank you for the recommendation, its been a pleasure😊👍
Highly recommended
First class customer service and fitting. Competitively priced and very tidy work by the fitting team. Highly recommended.
April 16, 2025
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Phil, Thank you for the great review! We’re really pleased to hear you were happy with the customer service, fitting, and tidy workmanship. Thanks so much for the recommendation — it’s really appreciated by the whole team!👍
Great communication and speedy service…
Great communication and speedy service from start to finish. Professional, clean and efficient fitting teams and lovely looking products. Lots of back and forth comms during the process keeping you informed. Very responsive. Would I recommend? Absolutely 100%
January 7, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Mike! 😊Thank you so much for the kind words! We really appreciate you taking the time to leave such a positive review. It was a pleasure working with you, and we’re delighted you’re happy with both the service and the end result. Thanks again for the recommendation!
Superb service
Bryony at GM Windows and doors has been brilliant from the get go. Kept us updated through enquiry to fitting. The guys that fitted the door were really professional, kept everywhere tidy and did a fantastic job really quite quickly. I thought it would have taken about 5 hours and it was fitted in less than 4. The door looks great and has really transformed the front of our house. Thank you, I will definitely be recommending you
January 8, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Kelly! Thank you so much for such a lovely review. It’s great to know the installation was quick, tidy, and that the new door has transformed the front of your home. We really appreciate the recommendation and your kind words – thank you again!😊
Great quality and finish
Great quality and finish with attention to detail.
Very friendly and hard working lads.
Very happy with final job!
Would recommend GM Windows.
January 6, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Howard😊Thank you for your great review! We’re delighted to hear you’re happy with the quality, finish, and attention to detail. It’s lovely to know the team made a good impression too. Thanks so much for the recommendation👊
We had new windows fitted on the…
We had new windows fitted on the coldest day of the year 5 /1/26 and the two guys who came to fit the windows where amazing very polite hard working and never complained once about how cold it was.
January 5, 2026
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Paul 😊 Thank you so much for your kind review. We’re really pleased to hear how happy you were with the installation! Thank you again for taking the time to share your experience. It's been a pleasure!👍
The service was outstanding from start…
The service was outstanding from start to finish. The team offered a highly competitive estimate, and the windows were ordered and delivered swiftly in just a few weeks. Kane and Paul were exceptional, going the extra mile to install the windows promptly and reliably, which put our minds at ease. The company kept us informed throughout, with quick and helpful communication. Arrangements for a builder at short notice were handled beautifully, and Steven's performance was impressive as well. The entire team was diligent and efficient, leaving no mess behind. I would wholeheartedly recommend them to anyone.
December 31, 2025
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Patricia, Thank you for your kind words. It’s great to know everything was completed efficiently and cleanly. Thank you again for your recommendation; it truly means a lot to us. Many thanks😊
Fantastic company & experience
Absolutely fantastic service, from quote to finishing. The team provided a very competitive quote and the windows were ordered and delivered within a couple of weeks. Kane and Paul were incredible and went above and beyond to fit the windows and ensure they were completed in a timely fashion. They worked so hard and helped reassure us. The company provided us with constant updates and communicated quickly and were so helpful. They were amazing at arranging for a builder to come at short notice and Steven was fantastic too. Everyone worked really hard, effectively and efficiently. There was no mess and I would recommend them to anyone.
December 23, 2025
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Rebecca, Thank you so much for your lovely review. We’re really pleased to hear you were happy with the whole process from start to finish. We’re glad we could help reassure you and keep everything running smoothly. Thank you again for your recommendation, it really does mean a great deal to us! 😊
Excellent service installing a new bay window
Friendly and useful advice and a clear process for the quote, then excellent service during the work itself. Very happy with the new window.
December 15, 2025
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Anoush! Thank you for your kind words. It's been a pleasure to work on this job. Many thanks 😁👍
Fantastic customer support
Fantastic customer support, friendly, helpful and a great job done, thanks to everyone involved.
December 18, 2025
Unprompted review
Reply from G M Windows & Doors Ltd
Hey, thank you for your lovely review! It's been a pleasure 😁
The lads made the whole process nice…
The lads made the whole process nice and easy for us from ordering to fitting and have done a quality job in terms of the finish. Couldn't be happier
December 11, 2025
Unprompted review
Reply from G M Windows & Doors Ltd
Hey Joseph, thank you for your lovely review, it's been a pleasure!😊
Great service all the way through…
Great service all the way through Bryony was super helpful communicating over messages, the lads who fitted our door and windows have done a brilliant job. Thank you will be recommending to others Rachel x
December 1, 2025
Unprompted review
Reply from G M Windows & Doors Ltd
Thank you so much Rachel!😁 We’re really glad you had a great experience. The team will be thrilled to hear your feedback. Enjoy your new door and windows, and thank you for recommending us!👍
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