Company lists · Data refreshed September 2026

Top 25 Window and door installation companies based in the United Kingdom

Name: Window and door installation 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 1,012 companies tracked

RevenueBase identified 1,012 window and door installation companies headquartered in the United Kingdom as of September 2026 and tracks 4,773 professional contacts across them, including 1,116 with verified work emails. London is the largest hub.

This list covers window and door installation 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

1,012Companies

4,773Contacts tracked

1,116Verified emails

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The 25 largest window and door installation companies based in the United Kingdom

Ranked by team size

Top 25 of 1,012 window and door installation 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 and door installation 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	First Home Improvements	Indirect evidence	Norwich, United KingdomHQ checked Sep 22, 2026	201-500	248 contacts →
	Indirect evidence “First Home Improvements traces its roots to the 1970's and prides itself on installing highly innovative A rated energy saving products unrivaled by many others within our…” Source: RevenueBase Database · checked Sep 22, 2026
2	Emplas Window Systems	Strong evidence	Wellingborough, United KingdomHQ checked Sep 22, 2026	201-500	117 contacts →
	Strong evidence “Emplas is the window and door fabricator of choice, offering a complete range of premium-quality, high-security, energy-efficient windows and doors for the trade installer, new…” Source: RevenueBase Database · checked Sep 22, 2026
3	KAT UK Macclesfield	Strong evidence	Macclesfield, United KingdomHQ checked Sep 22, 2026	51-200	82 contacts →
	Strong evidence “KAT UK is a Macclesfield based manufacturer of specialist glazing products, including Aluminium and PVCu bifold doors, sliding patio doors, entrance doors, French doors, windows…” Source: RevenueBase Database · checked Sep 22, 2026
4	CSJ	Indirect evidence	Falkirk, United KingdomHQ checked Sep 22, 2026	51-200	81 contacts →
	Indirect evidence “CSJ are providers of bespoke solutions to complement any home.” Source: RevenueBase Database · checked Sep 22, 2026
5	MGS	Partial evidence	Kingswinford, United KingdomHQ checked Sep 22, 2026	11-50	73 contacts →
	Partial evidence “MGS are a Different Type of Door Company.” Source: RevenueBase Database · checked Sep 22, 2026
6	Unique Window Systems LTD	Strong evidence	Leicester, United KingdomHQ checked Sep 22, 2026	201-500	71 contacts →
	Strong evidence “An award-winning designer, fabricator and installer of UPVC and aluminium windows, doors and curtain walling, Unique Window Systems Ltd specialises in the supply of quality…” Source: RevenueBase Database · checked Sep 22, 2026
7	Polyframe	Strong evidence	Lenwade, United KingdomHQ checked Sep 22, 2026	201-500	66 contacts →
	Strong evidence “Polyframe are a multi award-winning manufacturer of high quality windows, doors and conservatories.” Source: RevenueBase Database · checked Sep 22, 2026
8	VBH GB	Indirect evidence	Gillingham, United KingdomHQ checked Sep 22, 2026	51-200	62 contacts →
	Indirect evidence “VBH is the largest company in the hardware sector.” Source: RevenueBase Database · checked Sep 22, 2026
9	Glazerite UK Group LTD	Indirect evidence	Wellingborough, United KingdomHQ checked Sep 22, 2026	201-500	61 contacts →
	Indirect evidence “Glazerite UK Group is a leading trade fabricator offering installers access to one of the most comprehensive product ranges in the industry.” Source: RevenueBase Database · checked Sep 22, 2026
10	JPJ Installations LTD	Strong evidence	Braintree, United KingdomHQ checked Sep 22, 2026	51-200	57 contacts →
	Strong evidence “JPJ Installations Ltd are specialists in Aluminium Glazing Systems including Curtain Wall, Framing, Door and Window Systems.” Source: RevenueBase Database · checked Sep 22, 2026
11	Solidor	Partial evidence	Stoke-on-trent, United KingdomHQ checked Sep 22, 2026	51-200	48 contacts →
	Partial evidence “Born in 2004, Solidor has firmly established itself as the nation’s favourite manufacturer and supplier of composite doors.” Source: RevenueBase Database · checked Sep 22, 2026
12	Crystal Windows And Doors LTD	Strong evidence	Romford, United KingdomHQ checked Sep 22, 2026	201-500	43 contacts →
	Strong evidence “Crystal® was started in 1995 to offer a fair and honest service to customers wanting replacement windows and doors.” Source: RevenueBase Database · checked Sep 22, 2026
13	Sovereign Group LTD	Strong evidence	Nelson, United KingdomHQ checked Sep 22, 2026	201-500	42 contacts →
	Strong evidence “Sovereign Group are manufactures and installers of UPVC windows and doors, aluminium windows, doors and composite doors.” Source: RevenueBase Database · checked Sep 22, 2026
14	Hazlemere Group	Indirect evidence	High Wycombe, United KingdomHQ checked Sep 22, 2026	51-200	39 contacts →
	Indirect evidence “Hazlemere is a family owned and run double glazing manufacturer and installer based in High Wycombe, Buckinghamshire.” Source: RevenueBase Database · checked Sep 22, 2026
15	Russell Timber Technology	Strong evidence	Glasgow, United KingdomHQ checked Sep 22, 2026	51-200	39 contacts →
	Strong evidence “For over 55 years, Russell Timber Technology has been the UK’s leading manufacturer of energy efficient, sustainable, precision-engineered Timber and Alu-Clad windows, doors and…” Source: RevenueBase Database · checked Sep 22, 2026
16	Dekko Window Systems LTD	Strong evidence	Ashton-under-lyne, United KingdomHQ checked Sep 22, 2026	51-200	36 contacts →
	Strong evidence “DEKKO WINDOW SYSTEMS LIMITED Manufacturers of a wide range of glazing products for professional installation companies.” Source: RevenueBase Database · checked Sep 22, 2026
17	Joedan Windows & Doors	Indirect evidence	Tewkesbury, United KingdomHQ checked Sep 22, 2026	201-500	35 contacts →
	Indirect evidence “At Joedan, we are a family run business with Retail Design Centres across the Midlands and Southern England; to include a Manufacturing Facility and a Commercial Division.” Source: RevenueBase Database · checked Sep 22, 2026
18	Coral Windows Bradford Limited	Partial evidence	Bradford, United KingdomHQ checked Sep 22, 2026	51-200	34 contacts →
	Partial evidence “Coral Windows are a family run business who have had over 33 years experience within the home improvement industry.” Source: RevenueBase Database · checked Sep 22, 2026
19	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
20	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
21	Chigwell Window Centre PLC	Strong evidence	Forest Rd, United KingdomHQ checked Sep 22, 2026	51-200	27 contacts →
	Strong evidence “Established in 1996, Chigwell Window Centre PLC (part of Chigwell Group PLC) manufactures, supplies and installs aluminium and uPVC doors and windows for domestic, commercial and…” Source: RevenueBase Database · checked Sep 22, 2026
22	Select Windows Home Improvements Limited	Strong evidence	Walsall, United KingdomHQ checked Sep 22, 2026	51-200	26 contacts →
	Strong evidence “Manufacturers and Installers of PVCu windows and doors, patios, bifold plus, composite doors and fire doors from our central location delivery throughout the UK.” Source: RevenueBase Database · checked Sep 22, 2026
23	Britannia Windows	Partial evidence	Clevedon, United KingdomHQ checked Sep 22, 2026	51-200	24 contacts →
	Partial evidence “Britannia Windows started as a family business and remains in the family to this day.” Source: RevenueBase Database · checked Sep 22, 2026
24	Futuremost Limited	Strong evidence	Portsmouth, United KingdomHQ checked Sep 22, 2026	11-50	22 contacts →
	Strong evidence “Manufacturers and installers of aluminium and uPVC windows, doors, shop fronts and screens.” Source: RevenueBase Database · checked Sep 22, 2026
25	Arden Windows LTD	Partial evidence	Coventry, United KingdomHQ checked Sep 22, 2026	51-200	20 contacts →
	Partial evidence “Arden Windows is a Coventry based manufacturer and installer of high performance timber windows and timber doorsets supplying nationally.” 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 and door installation 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 and door installation companies.
Partial evidence: Its own public description names part of window and door installation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name window and door installation 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 1,012 window and door installation companies based in the United Kingdom

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Window and door installation companies based in the United Kingdom at a glance

As of Sep 22, 2026

23.4%Verified-email coverage

4.7Average contacts per company

1-10Median size (employees)

5.6%Largest-city concentration · London

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

596

11-50

294

51-200

201-500

501-1,000

10001+

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 1,012 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 and door installation 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 and door installation 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 and door installation 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 and door installation 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, 1,116 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.

Window and door installation companies by metro

Window and door installation companies in London57

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 and door installation 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 and door installation companies are there based in the United Kingdom?

RevenueBase identified 1,012 window and door installation 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?

First Home Improvements, headquartered in Norwich, tops this list with the largest team on record.

Which city has the most window and door installation companies?

London leads with 57 headquartered companies, followed by Norwich (14) and Leeds (12).

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 1,116 verified decision-maker contacts tracked across these 1,012 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.