Window / door fitterAndover★★★★★5.0· 33 reviews · 1 independent public source
✓
Credentials & registries
2 credentials shown
Trust Score
53out of 100
Good record, gaps to check
✓Rated 5.0 from 33 reviews
✓8 reviews in the last 12 months
How this score is worked out
Rating5.0 / 5
Review volume33
Independent sources1 independent public source
Credentials2 credentials shown
How this score is made up
What customers say32.8 of 60
Independent checks12.4 of 30
Track record8 of 10
See the independent checks
Licences and credentials4.1 of 8.3
Ways to reach them8.3 of 8.3
Reviewed on more than one site0 of 6.2
Registered company details0 of 4.1
Photos of their work0 of 2.1
Industry recognition0 of 1
Missing evidence lowers the score because we can't check it. It doesn't mean it doesn't exist. Claiming a profile never changes the score. Evidence context, not a guarantee of workmanship.
What we can verify about Test Valley Glass & Window Company Ltd
1 check
Each card sums up one thing we can check from public sources. Open it for the full detail and the named source. This is evidence context, not a guarantee.
These reviews are published independently on the named public source below, not testimonials this business chose to show. We bring them together and link each one back to where it appeared, so you can open the source and read it yourself.
5.0out of 5
33 reviews in public evidence8 reviews in the last 12 monthsReviewed on public review sources since 2020Most recent review
Customers often mention
Tidy & cleanMentioned in 44% of reviews we've read
Friendly & politeMentioned in 36% of reviews we've read
Fast & efficientMentioned in 28% of reviews we've read
ProfessionalMentioned in 28% of reviews we've read
Where these reviews are published
Which? Trusted Traders33 reviews · 5.0 avg
Detailed reviews
These are the individual reviews we hold for Test Valley Glass & Window Company Ltd, including the highlights above. The 33 headline total is the review volume reported across public review sources.
Customer in Hampshire
Customer recommends this business
Window Replacements
Test Valley supplied me with a professional service from start to finish. We had 14 windows and a door replaced by their staff who were polity and professional from start to finish. Staff members carried out a professional job leaving the building as if they had not been there. I was included throughout the works and consulted when any issues arrived. Start time was delayed due to windows not arriving when they should have done. I was informed quickly about this and given the date of arrival. Works started 2 days later. One of the windows had a crack in during installation, this was pointed out to me by the fitter. A replacement was ordered and fitted within a couple of days. I will be using them again on the next phase of works.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Hampshire
Customer recommends this business
Very happy with this company
Straightforward ordering of a new door and follow up survey was completed within a few days. The installation went ahead on the agreed date and was completed very efficiently with thorough attention to detail by a very friendly and courteous fitter. The new door is good quality and provides extra warmth and security, incorporating a high-end locking system.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Hampshire
Customer recommends this business
Test Valley Windows (Awesome).
I look after 21 houses in Green Jacket Close, and had 8 sets of new windows in each. From start to finish the service was awesome, from the first phone call to the end, I say the end but its not the end as you have 10 year warranty, so the service continues. I just had another 3 properties fitted at the beginning of the month, what can I say all my residents are over the moon with them, and straight away notice the different with the warmth and notice a drop in there bills due to the windows retaining the heat. Would I go back to Test Valley windows, 100% I would. I rate the whole service 10 out of 10.
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Hampshire
Customer recommends this business
Highly recommended
Replacement conservatory roof glass panel due to glazing blown, plus fixing of sticking conservatory French doors. Dave was open and honest about what was required, costs and time to complete. He called prior to arrival and was always on time for the quote and to complete the work. They cleared up after working and left everything super tidy. The roof looks fantastic and you would never know that any work has been done. The glass was a great match to the existing conservatory roof (which is c.20 years old). The conservatory French doors now open and lock without sticking - a huge improvement!
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in
Customer recommends this business
Cannot rate them high enough! Just excellent
Test Valley Windows have just completed a full house - 2 very large structural bays, 1 bow window, 10 other windows and new front door, french doors and garage side door for us. A large job! I have to say the process from start to finish has been excellent. Nothing was too much trouble. No, they are not the cheapest, but we compared their products against other companies around and we chose them because their product looked and felt superior. That extra cost is so worth it. It took a full two weeks to do the work, and we had Lee and Zak as our fitters. I have to say the quality of the product might be excellent, but the quality of the fitters is even better - outstanding. They made sure the job just shined! They truly made sure everything was correct to their own standards and their standard are high! They kept to the schedule, they kept to the agreed price - how often can you say that! We did have 1 or 2 issues to deal with when the french doors were measured wrongly and were too low. They dealt with this instantly, reordered new ones and fitted them a week later - no extra cost to us - it was just sorted! We have also had Dave their maintenance man around to check on a few things again very pleasent and helpful and again nothing was too much trouble, 10 year guarantee they said and they mean it! We are so pleased with everything that they have done for us. I have absolutely no hesitation in recommending them to anyone else and I have done already!
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Read the other 15 detailed reviews on this pageShow fewer reviews
Customer in Hampshire
Customer recommends this business
Very good experience
This is the third job we've had done by them. Always reliable, turning up when expected, and the jobs they have done have been first class. Started with a new entrance porch and last year renewed half of our windows. This year the other half were done. I wouldn't use anyone else.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Hampshire
Customer recommends this business
Faultless from start to finish
Test Valley Glass & Window Company satisfied our every need when surveying, quoting and supplying some 12 new UPVC Windows and a new Composite front door. Their fitters were efficient, skilled and totally professional in all aspects of meeting our needs, all within a fully justified price. The high quality of the products/materials used was complemented by their obvious skill and experience in the work involved, accompanied by their cheerful and polite manners. They showed the utmost care and appreciation of our home, laying protective floor coverings throughout and leaving everything in a spotless condition. Equally, it was obvious from their service years and remarks that they highly respected their employer and the standards expected of them, as reflected in the work performed. I would not hesitate to recommend this Company to anyone.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Hampshire
Customer recommends this business
New windows
Work carried out in a very professional manner by a good team of men. Very tidy and cleared up at end of job. Slight problem with one unit was quickly resolved. Would have no hesitation in using this company again.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Hampshire
Customer recommends this business
Great work
The team was lovely. We got comments from other builders working next door about how lovely they were. They worked quickly and cleanly. Fantastic company.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Hampshire
Customer recommends this business
Excellent Company
I have seldom encountered such an efficient company and the staff couldn’t have been more pleasant and helpful. They replaced a large window in a bedroom and also provided and installed a new front door. All work was carried out competently on the dates and times given. I had a small reservation about the type of lock on the front door and when I expressed my concern, a new and different lock mechanism was ordered and fitted without hesitation. Every member of staff with whom I have had dealings has been efficient and friendly. In all, I cannot recommend this company too highly. Excellent service.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Hampshire
Customer recommends this business
Professionally fitted window replacement
Our garden room (called a hybrid-orangery by the original company who installed the extension) has badly fitted windows by the company who built it. The windows had tissue paper stuffed between the window sill and the brickwork. The window bowed outwards and needed replacing. TVW measured the aperture and supplied and fitted a window professionally and correctly. The window was fitted on the day agreed and was at the agreed price. I've used TVW previously and am always pleased with their cleanliness and attention to detail. I will use them again.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Hampshire
Customer recommends this business
5 star service from start to finish
Installation of 5 windows, back door with integral side window and a 2700mm sliding patio doors two days ago. All installed on schedule and budget. Excellent show room with a personable, knowledgible and helpful manager. Excellent admin staff, very efficient. A cheerful Installation team arrived on time, worked efficiently and cleaned up superbly. No redecoration needed and we're very pleased with the finished look. The lead installer noticed a small nick on the patio door handle and said that will be replaced at the same time as supplying more window lock keys. An excellent product with aftercare products for cleaning etc supplied.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
John in Hampshire
Customer recommends this business
Excellent work, reasonable price and very tidy too
They've now done two jobs for us. FIrst was renewing our porch and converting it to double glazing. More recently, replacung two windows and a front door. They came when agreed and were fast, efficient, and very tidy. All three workers from there that I've met have been cheerful and nice. We won't be looking at anyone else for further similar jobs.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Hampshire
Customer recommends this business
New Doors
Work was to replace the front door back door and side access door/window to the garage. The quote was competitive compared to others. Nigel was very helpful without being a pushy salesman. Once the work was agreed an issue was identified at the survey stage which meant that the glass we had wanted was no longer available but other options were available and this was quickly resolved. The team turned up on time and got straight to work tackling a door each and helping out as required. Very tidy workers and they didn't even drink that much tea! The quality of the doors is amazing and we are very happy. On the day of installation I noticed an issue with the garage door, the window was obscured but the door glass was clear, however, one quick call to the office and a new obscure pane was on order. Still waiting for that to arrive but it has only been a week since installing. I would recommend Test Valley Windows and Doors and have already contracted with them to cut through my kitchen window and install patio doors. My faith in trades has been restored thanks for the great work!
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Hampshire
Customer recommends this business
New Door
Excellent workmanship. Very pleasant to deal with. Kept informed of progress throughout. Could not be more pleased.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Hampshire
Customer recommends this business
Still outstanding in every respect.
We are no strangers to Test Valley Glass and Windows. They built our conservatory earlier in the year and did such an outstanding job on it, in every respect, that we automatically went back to them to replace our front door assembly. It wasn't a big job from their point of view but they put the same degree of proficiency into it as they had with the conservatory and kept religiously in line with all their contractual commitments at every stage. They only use top-quality materials, which makes them marginally more expensive than their competitors, but backed up by the professional competence of their workforce, at all levels, the small difference in cost is well worth paying. It is a genuine pleasure doing business with this company and we have no hesitation in recommending them to anybody looking for a top-quality job. Malcolm and Nigel are quite rightly proud of their staff and this time Steve and Paul earned particular praise. The new door assembly was supplied, fitted and ready to go between 0810 when they arrived and 1310 when they left, leaving no trace of their presence. How many construction companies can compete with that?
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Peter in Hampshire
Customer recommends this business
Excellent service and product
Contacted Test Valley windows for a quote to replace my front door/side window and rear door. The whole experience from contact through to installation was excellent. They provided guidance and advice without underlying sales pressure. This together with the quality of their product, professionalism and, importantly, fitting received provide good value. I would use again and strongly recommend
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Jackie in Hampshire
Customer recommends this business
So pleased I chose this company. Very pleasant and professional at every stage of the process. Impressed with installation and would recommend.
I have nothing but praise for this company. All staff friendly and approachable. Every stage has gone smoothly. I'm impressed with the French doors, the workmanship and installation. The area was tidied inside and out and left spotless. I can only recommend. Will definitely use their service again.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Customer in Hampshire
Customer recommends this business
Outstanding in every respect
The whole job was well managed from the initial contact to handing over the door keys when the work was completed. Everything is done with meticulous care and attention to detail. We were given good advice at the initial visit, which was promptly arranged, and every aspect was either explained, or demonstrated, or both. The quote we were given was adhered to to the penny, so there were no awkward surprises. It is clear that all the installers involved in the project are talented and take obvious pride in their work and in ensuring that the customer is 100% happy. They all arrived at the agreed times and worked continuously until the job was finished, clearing up after themselves and demonstrating the door installations before leaving. We have used Test Valley Windows over a number of years and have had a similar positive experience on each occasion. We would therefore have no hesitation in recommending the company
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Tess in Hampshire
Customer recommends this business
Bi-fold patio doors to replace outdated one - just fabulous!
Test Valley Windows have been great throughout the whole process. From initial enquiry to visiting the showroom to see the patio doors. Excellent communication from beginning to end. The doors were fitted on the date given. There was a small issue that arose, as sometimes does, but it was dealt with and the doors were installed beautifully. The lovely chaps were very friendly, appreciated the supply of tea and coffee and left the area as they found it, cleaned up and tidied away. They even put dust sheets down as it was easier to come through the house than going around the back. Very considerate workers. Thank you and I am loving the new doors and can definitely feel the difference in the heat retention in the house.
Work completed:
Scores listed by Which? Trusted Traders
Customer Service
5 / 5
Quality
5 / 5
Value
5 / 5
Local context
Rated 5.0, in line with the local average for window / door fitters in Andover
Across 6 window / door fitters in Andover, the typical rating is 4.9 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.
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From customer reviews
What customers consistently say
Recurring themes from 25 customer reviews on Which? Trusted Traders.
Customers who keep coming back: “This is the third job we've had done by them.” · Which? Trusted Traders, 11 Nov 2025
Reliable and punctualQuoted from 3 reviews
“always on time” · Which? Trusted Traders, 17 Nov 2025
“A cheerful Installation team arrived on time” · Which? Trusted Traders, 1 Sept 2023
“They all arrived at the agreed times” · Which? Trusted Traders, 21 Mar 2023
Quality of the workQuoted from 2 reviews
“the quality of the fitters is even better - outstanding.” · Which? Trusted Traders, 13 Nov 2025
“The high quality of the products/materials used was complemented by their obvious skill” · Which? Trusted Traders, 3 Oct 2025
Credentials and associations
Credentials and memberships
2
These credentials and memberships are attributed to named public sources. Check the source before relying on them.
These sources do not label every image as completed work. The gallery may include projects, people, logos or certificates, so it does not count as completed-work evidence.
LivinRoom Orangery Winchester.jpg
Inside Livin Room Orangery Winchester.jpg
Black LivinRoom Orangery.JPG
T Shaped Conservatory.jpg
Porch Longstock Stockbridge Winchester.jpg
Georgian Sliding Sash Window PVCu.jpg
Georgian Sliding Sah Window Inside View.jpg
From Which? Trusted Traders
Opening hours
The hours this business publishes online, handy for knowing when to call. Confirm before you set off.
Monday–Friday
9am–5pm
Saturday
9:30am–4pm
04
Sources
Where this information comes from
2 named public sources
Everything on this page is drawn from named public sources. Where a source provides a public link, you can open the original and dig deeper.
Established in 1995 Test Valley Windows prides itself on customer satisfaction. The majority of our business comes from existing clients and personal recommendations, we strive to achieve customer gratification at all times. Director Malcolm Mackenzie says “we are a friendly approachable company with a genuine desire to fulfill customer’s needs. Our sole aim is to provide a professional service from conception to completion with an after sales service second-to-none” This is echoed in having been awarded the Plastic Window Federation Certificate of Excellence for impeccable service every year for the last 18 years. Adopting a 'no pressure' sales policy, we will listen to your requirements, offer professional advice and produce a free comprehensive no obligation quotation for you to make an informed choice, at your leisure. So if you are thinking of buying Windows, Doors, a Conservatory or Orangery, contact us or visit our showroom to find out why so many of our customers would recommend us.
Areas served: Hampshire, Wiltshire, Dorset, Berkshire, Surrey
Good to know: Design service
These are statements the business makes on its own website, worth confirming in writing (and on the official registers) before you hire, not independently verified by us.
Review pace is higher than usual8 reviews in the last 12 months, above their long-term review pace of about 5 a year. A sign their public feedback is current.
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How long they've really been tradingThey state they've been established since 1995, but the earliest independent source we can find is 2020. Worth asking them about the gap.
They say, established1995First public review2020
Your own checks
What to check before you hire
Worth checking yourself
Their public evidence comes from a single source. Look them up on another site before deciding.
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Be wary of high-pressure 'today-only' discounts and a salesperson who won't leave. A reputable window or door firm gives you a written, itemised quote you can take away and compare against others.
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Never pay the full price up front; a modest deposit with the balance on completion is normal. Ask what deposit protection or insurance-backed guarantee you get if the firm stops trading before fitting.
✓
Get the specification in writing (frame material, the glazing units and their energy rating, and any trickle vents) so you can check you got what you paid for.
Want an extra legitimacy check? Run the Cowboy Checker on Test Valley Glass & Window Company Ltd before you contact them.
Common questions about Test Valley Glass & Window Company Ltd
Is Test Valley Glass & Window Company Ltd a legitimate business?
Test Valley Glass & Window Company Ltd has 33 independent public reviews, rated 5 out of 5. This is independent public evidence gathered from named public sources (no ads, no paid placement), not a guarantee of workmanship. If anything here is out of date, the business can request a correction.
What do customers say about Test Valley Glass & Window Company Ltd?
Test Valley Glass & Window Company Ltd has 33 public reviews, averaging 5 out of 5. You can read the individual reviews and where each came from in the reviews section above.
How do I know Test Valley Glass & Window Company Ltd's reviews are genuine?
Test Valley Glass & Window Company Ltd's 33 public reviews come from a named public review source, and MyTrustedTraders links every one back to where it was published, so you can open the source and read them yourself rather than trusting a single curated 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.
Has Test Valley Glass & Window Company Ltd had recent public reviews?
Test Valley Glass & Window Company Ltd has 8 public reviews dated within the last 12 months. That shows their review history includes recent feedback; it does not prove current availability, so confirm capacity before hiring.
Is Test Valley Glass & Window Company Ltd qualified and accredited?
We hold 2 independently sourced credentials for Test Valley Glass & Window Company Ltd, including FENSA, Which? Trusted Trader. Each is attributed to the body that issued it in the credentials section. For example, FENSA is the competent-person scheme for replacement windows and doors, self-certifying they meet building regulations.
What does Test Valley Glass & Window Company Ltd specialise in?
Test Valley Glass & Window Company Ltd lists specialist services including Replacement window services and repairs, Double glazing installation, Double glazing repair, Sash windows, Aluminium Windows, UPVC Windows. If your job is one of these, look for it in their listed services or ask them to confirm for your project.
What areas does Test Valley Glass & Window Company Ltd cover?
They state on their own website that they cover Hampshire, Wiltshire, Dorset, Berkshire, Surrey. This is the business's own statement on their website, not something we have independently checked. Confirm they cover your postcode before booking.
How long has Test Valley Glass & Window Company Ltd been trading?
Test Valley Glass & Window Company Ltd has been reviewed on public sources since 2020.
These describe public evidence MyTrustedTraders held at the stated dates. They are not independent awards, they cannot be bought, and they do not change this business's Trust Score or search position. How milestones are measured