Company lists · Data refreshed September 2026

Top 25 Window replacement companies based in the United Kingdom

Name: Window replacement companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 279 companies tracked

RevenueBase identified 279 window replacement companies headquartered in the United Kingdom as of September 2026 and tracks 959 professional contacts across them, including 231 with verified work emails. London is the largest hub.

This list covers window replacement companies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review

279Companies

959Contacts tracked

231Verified emails

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The 25 largest window replacement companies based in the United Kingdom

Ranked by team size

Top 25 of 279 window replacement companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to window replacement companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Dekko Window Systems LTD	Partial evidence	Ashton-under-lyne, United KingdomHQ checked Sep 22, 2026	51-200	36 contacts →
	Partial evidence “DEKKO WINDOW SYSTEMS LIMITED Manufacturers of a wide range of glazing products for professional installation companies.” Source: RevenueBase Database · checked Sep 22, 2026
2	APW Glazing Limited	Partial evidence	Cannock, United KingdomHQ checked Sep 22, 2026	11-50	30 contacts →
	Partial evidence “Expert Facade & Window Installers Accredited to major composite window manufactures standards, we help developers deliver the extraordinary through our expertise, professionalism…” Source: RevenueBase Database · checked Sep 22, 2026
3	Everglade Windows LTD	Partial evidence	Greenford, United KingdomHQ checked Sep 22, 2026	51-200	27 contacts →
	Partial evidence “At Everglade Windows, we are devoted to progressive thinking and pushing boundaries.” Source: RevenueBase Database · checked Sep 22, 2026
4	DW Windows LTD	Partial evidence	Wolverhampton, United KingdomHQ checked Sep 22, 2026	51-200	16 contacts →
	Partial evidence “DW Windows have been offering windows, doors and other home improvements across the West Midlands since 2006.” Source: RevenueBase Database · checked Sep 22, 2026
5	Brackenwood Windows	Indirect evidence	Basingstoke, United KingdomHQ checked Sep 22, 2026	51-200	15 contacts →
	Indirect evidence “Brackenwood is a name you can rely on for quality.” Source: RevenueBase Database · checked Sep 22, 2026
6	3d Aluminium	Partial evidence	Eynsham, United KingdomHQ checked Sep 22, 2026	11-50	15 contacts →
	Partial evidence “With over 53 years experience 3D Aluminium is one of the leading players in the commercial and public sectors, offering a range of technically advanced window, door and curtain…” Source: RevenueBase Database · checked Sep 22, 2026
7	Aspect Windows Western LTD	Indirect evidence	Exeter, United KingdomHQ checked Sep 22, 2026	11-50	15 contacts →
	Indirect evidence “We are a local, trusted family run business established in 1981.” Source: RevenueBase Database · checked Sep 22, 2026
8	Alpha Facilities Group LTD	Partial evidence	Bromsgrove, United KingdomHQ checked Sep 22, 2026	11-50	14 contacts →
	Partial evidence “Alpha Group is a Midlands based specialist in high quality refurbishment and fit-outs, and also are experts in installing Windows and Doors for both the domestic and commercial…” Source: RevenueBase Database · checked Sep 22, 2026
9	Safeguard Glazing Supplies LTD	Partial evidence	Peterborough, United KingdomHQ checked Sep 22, 2026	51-200	13 contacts →
	Partial evidence “Since 1995 we have been improving properties by supplying and installing new doors, windows, glass and glazing.” Source: RevenueBase Database · checked Sep 22, 2026
10	Prima Systems SE LTD	Indirect evidence	Dover, United KingdomHQ checked Sep 22, 2026	11-50	11 contacts →
	Indirect evidence “Prima Systems specialises in the management, procurement & installation of high performance building & facade solutions.” Source: RevenueBase Database · checked Sep 22, 2026
11	SRJ Windows	Partial evidence	Rosyth, United KingdomHQ checked Sep 22, 2026	51-200	11 contacts →
	Partial evidence “SRJ Windows has been providing a quality service throughout Scotland since 1992.” Source: RevenueBase Database · checked Sep 22, 2026
12	Ecohaus Windows & Doors	Indirect evidence	Stroud, United KingdomHQ checked Sep 22, 2026	11-50	10 contacts →
	Indirect evidence “Distinctive by DESIGN.” Source: RevenueBase Database · checked Sep 22, 2026
13	SGC Glass LTD	Partial evidence	Wickford, United KingdomHQ checked Sep 22, 2026	11-50	9 contacts →
	Partial evidence “At SGC Glass, we are leaders in commercial glazing, aluminium fabrication, and window and door installation, delivering exceptional quality and craftsmanship since our founding in…” Source: RevenueBase Database · checked Sep 22, 2026
14	Classic Windows	Partial evidence	Stanley, United KingdomHQ checked Sep 22, 2026	11-50	9 contacts →
	Partial evidence “Classic Windows, ‘Manufacturer of Windows and Doors’, has been offering high-quality products and service for almost a quarter of a decade.” Source: RevenueBase Database · checked Sep 22, 2026
15	Design Window And Door Systems Limited	Strong evidence	Cambridge, United KingdomHQ checked Sep 22, 2026	51-200	8 contacts →
	Strong evidence “Replacement Windows in Cambridgeshire and Suffolk from Design Windows & Doors Systems Ltd - Excellent, Fast and Friendly Service.” Source: RevenueBase Database · checked Sep 22, 2026
16	Manu101 Limited	Partial evidence	Harrow, United KingdomHQ checked Sep 22, 2026	1-10	8 contacts →
	Partial evidence “We are a team of young, highly motivated professional fixers, specializing in Windows Fixing, but we also cover other work and services, such as cladding facades, curtain walling…” Source: RevenueBase Database · checked Sep 22, 2026
17	West Leigh Group	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	7 contacts →
	Partial evidence “In 1943 West Leigh were busy repairing the bomb damaged windows and facades of London's buildings.” Source: RevenueBase Database · checked Sep 22, 2026
18	Passivlux	Partial evidence	Whitstable, United KingdomHQ checked Sep 22, 2026	1-10	7 contacts →
	Partial evidence “Passivlux has been established with the specific purpose of supplying high-quality performance windows and doors to all sectors of the construction industry.” Source: RevenueBase Database · checked Sep 22, 2026
19	Ripton Windows Limited	Partial evidence	Basingstoke, United KingdomHQ checked Sep 22, 2026	11-50	6 contacts →
	Partial evidence “Ripton Windows Limited is a construction company based out of 3 Crockford Lane, Basingstoke, HAMPSHIRE, United Kingdom.” Source: RevenueBase Database · checked Sep 22, 2026
20	Northern Trade Windows	Indirect evidence	Pudsey, United KingdomHQ checked Sep 22, 2026	1-10	6 contacts →
	Indirect evidence “We'll take care of everything for you, from design right through to installation and we offer an after-care service which is second to none.” Source: RevenueBase Database · checked Sep 22, 2026
21	Holdsworth Windows Limited	Partial evidence	Shipston On Stour, United KingdomHQ checked Sep 22, 2026	11-50	5 contacts →
	Partial evidence “We offer our customers the complete window fitting service, including site surveys, design, manufacture, repair and refurbishment, installation and double glazing.” Source: RevenueBase Database · checked Sep 22, 2026
22	D&m Windows & Doors LTD	Partial evidence	Oldham, United KingdomHQ checked Sep 22, 2026	11-50	5 contacts →
	Partial evidence “D&M Windows & Doors Ltd is a company based out of United Kingdom.” Source: RevenueBase Database · checked Sep 22, 2026
23	Adco Glazing	Indirect evidence	Cardiff, United KingdomHQ checked Sep 22, 2026	11-50	5 contacts →
	Indirect evidence “ADCO Glazing has continually invested in business development, reflecting our commitment to offering exceptional service.” Source: RevenueBase Database · checked Sep 22, 2026
24	Benchmark Windows LTD	Partial evidence	Lancing, United KingdomHQ checked Sep 22, 2026	1-10	4 contacts →
	Partial evidence “Benchmark Windows Ltd are a newly founded, forward thinking, customer centric company born from more than fifty years of combined window industry experience.” Source: RevenueBase Database · checked Sep 22, 2026
25	IGP Solutions LTD	Partial evidence	High Wycombe, United KingdomHQ checked Sep 22, 2026	11-50	4 contacts →
	Partial evidence “IGP Solutions are a Window Filming Company who seek professional solutions for all window filming requirements.” Source: RevenueBase Database · checked Sep 22, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: window replacement companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names window replacement companies.
Partial evidence: Its own public description names part of window replacement companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name window replacement companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 279 window replacement companies based in the United Kingdom

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Window replacement companies based in the United Kingdom at a glance

As of Sep 22, 2026

24.1%Verified-email coverage

3.4Average contacts per company

1-10Median size (employees)

5.7%Largest-city concentration · London

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

156

11-50

51-200

501-1,000

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 279 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among window replacement companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United Kingdom whose own description of what they do matches “window replacement companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names window replacement companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among window replacement companies, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 231 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 22, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names window replacement companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many window replacement companies are there based in the United Kingdom?

RevenueBase identified 279 window replacement companies headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Dekko Window Systems LTD, headquartered in Ashton-Under-Lyne, tops this list with the largest team on record.

Which city has the most window replacement companies?

London leads with 16 headquartered companies, followed by Cambridge (5) and Leicester (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 231 verified decision-maker contacts tracked across these 279 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.