“Very reliable, turned up on time” · Checkatrade, 5 Mar 2025
“Very punctual.” · Checkatrade, 18 Dec 2023
Public evidence profile · Checked March 2026
Diamond Glass & Glazing Southern Ltd
Emergency callout
Windows / Doors / Conservatories
Credentials & registries
2 credentials shown
No Trust Score yet
- Rated 4.9 from 96 reviews across 2 review sources
- 5 reviews in the last 12 months
Based on rating, review volume, independent sources and credential evidence. Evidence context, not a guarantee of workmanship.
Trust at a glance
2 things checkedWhat we can verify about Diamond Glass & Glazing Southern Ltd
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.
Emergency calloutWindows / Doors / ConservatoriesSee detail →Credentials & registries2 credentials shownSee detail →
See the full verification checklist for Diamond Glass & Glazing Southern Ltd →From Checkatrade
Emergency callout
Lists emergency callout on Checkatrade for:
- Windows / Doors / Conservatories
This is how they list themselves on Checkatrade. Call ahead to confirm they can come out for your job right now before you rely on it.
From customer reviews
What customers consistently say
Recurring themes from 82 customer reviews across 2 review sources.
Respectful and tidy in your home: “Kevin and his team had cleaned any mess that had been created” · Checkatrade, 9 Dec 2022
Credentials and associations
2Credentials and memberships
These credentials and memberships are attributed to named public sources. Check the source before relying on them.
- Source reference
- 24
- Source checked
- 9 Jul 2026
- Source checked
- 25 Jun 2026
Reviews · public evidence
What customers say
These reviews are published independently on the named public sources 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.
4.9out of 5
How Checkatrade customers rate them (out of 5)
Reliability5.0
Communication5.0
Quality of work5.0
Often reviewed for
Where these reviews are published
- Checkatrade58 reviews · 4.9 avg
- Which? Trusted Traders38 reviews · 5.0 avg
Highlights
“Cat flap fitted into glass door. Vey happy with service. Recommended.”
“Quick and efficient, great communication throughout. Doors open and close smoothly now!”
“Very pleased with the service - from providing a quote quickly to replacing broken window panel .Would definitely recommend Diamond Glass !”
Detailed reviews
These are the individual reviews we hold for Diamond Glass & Glazing Southern Ltd, including the highlights above. The 96 headline total is the review volume reported across public review sources.
Verified by Checkatrade
I had the job done efficiently and I was really impressed with the level of professionalism. Thank you
Verified by CheckatradeUPVC Window replacement
I have used Diamond Glass and Glazing in the past, and returned for their services to replace the UPVC Windows at my home. They've never let me down. From the initial quotation through to the work completion, Kevin and his colleague done a superb job. Kevin is punctual and very polite. His workmanship is excellent. I'm already considering using them again for another job I have in mind. Thanks Kevin, the windows look fantastic!
Verified by CheckatradeReplaced 5 sealed double glazed windows as wanted privacy glass
Very reliable, turned up on time, quoted came through quickly, work booked in at a time suit. Would recommend.
Verified by CheckatradeTo replace a rectangular section of double glazed and leaded window in my front porch.
Kevin from Diamond Glass was punctual and polite. His work was first class and I am very pleased with the resulting window section.
Verified by CheckatradeWindow Quote
Arranged to come round to quote to replace 3 windows at a time of the company’s choosing. Waited in all morning and they didn’t turn up. On chasing I was told they were delayed and that when they did arrive they couldn’t find parking so they left. They didn’t even call or inform me before leaving. Offered to rearrange, but upon asked to be called next time as I could easily assist with parking if asked, the owner Kevin was rude and told me to find another company. Impolite and wasted my time. Avoid.
Read the other 9 detailed reviews on this pageShow fewer reviews
Verified by CheckatradeExcellent work on new windows and doors.
In 2017 I had new windows in two quite crooked rooms and a bathroom installed by Kevin. I was so pleased with his reliability, workmanship and professionalism that this year I had 4 more rooms done, including a fully glazed back door and double French windows. He also installed secondary glazing on two large stained glass windows. He came first to discuss requirements and timing, sent a written estimate, came again to measure accurately and a third time to instal. I have no hesitation in recommending Kevin unreservedly.
Verified by Checkatrade
Kevin replaced several glazing panels which had blown in our flat together with the hinges and locks. He is professional, competent and courteous. I wouldn’t hesitate to recommend him.
Verified by CheckatradeFront Door lock Replacement
Kevin replaced the lock mechanism on my front door. No fuss; professional and friendly service.
Verified by CheckatradeBeautiful new front door & window hinges fixed
We thought that our front door might need replacing and our windows needed checking out. Kevin visited, quickly checked our windows and showed which ones needed repairing and confirmed that our front door needed replacing - which wasn't surprising after 20 odd years! He left a door brochure, so we could select door and window style and colour and subsequently sent a quotation, which we accepted. When the door was ready, he came with a colleague to repair windows and fix the door - It was done with a minimum of fuss. All in all, very professional and a good price!
Verified by CheckatradeReplacing three misted double-glazed windows + couple of handles
Kevin turned up to measure-up when he said he would, and followed this up with a written quote shortly thereafter. We do not bother getting multiple quotes (wasting trades' time + ours) as we know roughly how much things cost; Kevin's quote was competitive. Installation all went smoothly and efficiently on the agreed date. He is a true professional and comes highly recommended!
Verified by Checkatrade
Excellent service in changing door lock: prompt response, very helpful and efficient. would certainly use again.
Verified by Checkatrade
Kevin came to quote on time and gave a fair price. He was flexible with the date of the job and completed with no issue what so ever. I have no issues highly recommending Kevin and Diamond Glass and Glazing Southern Ltd
Verified by Checkatrade3 windows locked replaced. The windows were frozen with rust.
Was the only operative who wanted to inspect job before quoting which was reassuring. Very punctual. Very professional. Very friendly. Kevin comes highly recommended.
Verified by CheckatradeRepairing, replacing existing windows and fitting new double glazed window.
They had to supply and fit glass sealed units to six windows and window locks to three windows. Also Supply and fit 1 PVCU window to the kitchen. The work was completed in good time to my complete satisfaction. Tidy neat and clean. Would recommend them.
Local context
Rated 4.9, in line with the local average for window / door fitters in London
Across 255 window / door fitters in London, the typical rating is 4.9 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.
Sources
3 named public sourcesWhere this information comes from
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.
Review sources
Registers and membership directories
Public evidence last checked March 2026
About
With 57 reviews and a FENSA accreditation, Diamond Glass & Glazing Southern Ltd stands out for its commitment to detail and customer satisfaction in the London area. Many customers praise Kevin for his professionalism and kindness, as seen in positive feedback like Emily L's, who highlights his willingness to go above and beyond. Multiple reviews commend his punctuality, efficiency, and cleanliness, qualities that have led to repeat business and recommendations. Serving the community for 6 years, Kevin's expertise is particularly noted in glazing and locksmith services, offering transparent quoting and timely project completions.
Services they list
Aluminium Doors RepairAluminium Windows RepairBay Windows RepairBifold Doors RepairCat FlapsComposite Front Doors InstallationComposite Front Doors RepairConservatory RepairsDog FlapsDouble Glazing InstallationDouble Glazing RepairExterior Doors Repair
Listed on public sources or the business's own website; check directly that they cover your job before you book.
Areas served
London
The areas they list covering on a public directory; confirm they cover your address before you book.
Independent checks
About this business
Recently reviewed5 reviews in the last 12 months.
Your own checks
What to check before you hire
Worth checking yourself
Always confirm credentials and quotes with the business directly before hiring.
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.
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 Diamond Glass & Glazing Southern Ltd before you contact them.
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Common questions about Diamond Glass & Glazing Southern Ltd
Is Diamond Glass & Glazing Southern Ltd a legitimate business?
Diamond Glass & Glazing Southern Ltd has 96 independent public reviews, rated 4.9 out of 5, gathered and cross-checked across 2 review sources. 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 Diamond Glass & Glazing Southern Ltd?
Diamond Glass & Glazing Southern Ltd has 96 public reviews, averaging 4.9 out of 5, gathered across 2 review sources. You can read the individual reviews and where each came from in the reviews section above.
How is Diamond Glass & Glazing Southern Ltd rated on reliability and quality?
On Checkatrade, customers rate Diamond Glass & Glazing Southern Ltd by category: Reliability 5.0 out of 5, Communication 5.0 out of 5, Quality of work 5.0 out of 5. These are per-category scores from real published reviews. They show where Diamond Glass & Glazing Southern Ltd is strongest, not just the overall average.
How do I know Diamond Glass & Glazing Southern Ltd's reviews are genuine?
Diamond Glass & Glazing Southern Ltd's 96 public reviews are gathered and cross-checked across 2 review sources. Reviews spread across several review 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.
Has Diamond Glass & Glazing Southern Ltd had recent public reviews?
Diamond Glass & Glazing Southern Ltd has 5 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 Diamond Glass & Glazing Southern Ltd qualified and accredited?
We hold 2 independently sourced credentials for Diamond Glass & Glazing Southern 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 Diamond Glass & Glazing Southern Ltd specialise in?
Diamond Glass & Glazing Southern Ltd lists specialist services including Aluminium Doors Repair, Aluminium Windows Repair, Bay Windows Repair, Bifold Doors Repair, Cat Flaps, Composite Front Doors Installation. If your job is one of these, look for it in their listed services or ask them to confirm for your project.