Company lists · Data refreshed September 2026

Top 25 Skylights and window companies based in the United Kingdom

Name: Skylights and window 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 519 companies tracked

RevenueBase identified 519 skylights and window companies headquartered in the United Kingdom as of September 2026 and tracks 3,808 professional contacts across them, including 1,229 with verified work emails. London is the largest hub.

This list covers skylights and window 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

519Companies

3,808Contacts tracked

1,229Verified emails

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The 25 largest skylights and window companies based in the United Kingdom

Ranked by team size

Top 25 of 519 skylights and window 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 skylights and window 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	Nordan UK LTD	Partial evidence	Livingston, United KingdomHQ checked Sep 22, 2026	51-200	154 contacts →
	Partial evidence “NorDan is one of Europe’s leading manufacturers of high performance windows, doors and smart accessories.” Source: RevenueBase Database · checked Sep 22, 2026
3	KAT UK Macclesfield	Partial evidence	Macclesfield, United KingdomHQ checked Sep 22, 2026	51-200	82 contacts →
	Partial 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	Monodraught LTD	Indirect evidence	High Wycombe, United KingdomHQ checked Sep 22, 2026	51-200	81 contacts →
	Indirect evidence “Monodraught Ltd design and manufacture low carbon, low energy solutions for the Natural Ventilation, Natural Daylight and Natural Cooling markets.” Source: RevenueBase Database · checked Sep 22, 2026
5	Glazing Vision	Indirect evidence	Diss, United KingdomHQ checked Sep 22, 2026	51-200	74 contacts →
	Indirect evidence “Technical experts in the design, manufacture and supply of engineered, architectural glass rooflights for residential and commercial buildings.” Source: RevenueBase Database · checked Sep 22, 2026
6	Schüco UK And Ireland	Partial evidence	Milton Keynes, United KingdomHQ checked Sep 22, 2026	51-200	71 contacts →
	Partial evidence “With over 30 years of experience, Schüco UK Ltd is a leading building envelope specialist supplying high-quality system solutions in aluminium and steel for windows, doors…” Source: RevenueBase Database · checked Sep 22, 2026
7	Polyframe	Partial evidence	Lenwade, United KingdomHQ checked Sep 22, 2026	201-500	66 contacts →
	Partial evidence “Polyframe are a multi award-winning manufacturer of high quality windows, doors and conservatories.” Source: RevenueBase Database · checked Sep 22, 2026
8	Maple Façades	Indirect evidence	Stockport, United KingdomHQ checked Sep 22, 2026	51-200	64 contacts →
	Indirect evidence “Maple Facades is a leading designer, manufacturer and installer of rainscreen cladding, architectural façades and solar shading for building exteriors and interiors.” Source: RevenueBase Database · checked Sep 22, 2026
9	JPJ Installations LTD	Partial evidence	Braintree, United KingdomHQ checked Sep 22, 2026	51-200	57 contacts →
	Partial 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
10	Express Bi-Folding Doors	Indirect evidence	Leeds, United KingdomHQ checked Sep 22, 2026	201-500	56 contacts →
	Indirect evidence “Express Bi Folding Doors are the UK's leading manufacturer & installer of bespoke aluminium products.” Source: RevenueBase Database · checked Sep 22, 2026
11	Brett Martin Daylight Systems	Indirect evidence	Coventry, United KingdomHQ checked Sep 22, 2026	51-200	46 contacts →
	Indirect evidence “Brett Martin Daylight Systems is the UK and Ireland’s leading rooflight manufacturer.” Source: RevenueBase Database · checked Sep 22, 2026
12	Vision Arch	Indirect evidence	Cambridge, United KingdomHQ checked Sep 22, 2026	11-50	44 contacts →
	Indirect evidence “Vision Arch has been designing and installing high-quality bespoke architectural facades, roof glazing, and glass atria for over 26 years now, mainly within the commercial sector.” Source: RevenueBase Database · checked Sep 22, 2026
13	The Rooflight CO	Strong evidence	Bourton-on-the-water, United KingdomHQ checked Sep 22, 2026	51-200	42 contacts →
	Strong evidence “Offering the UK’s widest selection of high quality rooflights, roof windows and skylights, The Rooflight Co.” Source: RevenueBase Database · checked Sep 22, 2026
14	Whitesales	Indirect evidence	Surrey, United KingdomHQ checked Sep 22, 2026	51-200	39 contacts →
	Indirect evidence “For more than 30 years, Whitesales has been driving innovation in the development of daylighting and roof glazing solutions.” Source: RevenueBase Database · checked Sep 22, 2026
15	Russell Timber Technology	Partial evidence	Glasgow, United KingdomHQ checked Sep 22, 2026	51-200	39 contacts →
	Partial 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	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
17	Roof Maker	Indirect evidence	Leicester, United KingdomHQ checked Sep 22, 2026	51-200	34 contacts →
	Indirect evidence “Roof Maker manufactures a suite of patented rooflights, designed to address the most demanding challenges our customers face.” Source: RevenueBase Database · checked Sep 22, 2026
18	Polar NE	Partial evidence	Middlesbrough, United KingdomHQ checked Sep 22, 2026	51-200	31 contacts →
	Partial evidence “Polar are one of the UK's leading providers of windows, doors, curtain walling, healthcare windows, healthcare doors, brise soleil, louvres and bespoke solutions.” Source: RevenueBase Database · checked Sep 22, 2026
19	Reconal LTD	Indirect evidence	Basingstoke, United KingdomHQ checked Sep 22, 2026	51-200	31 contacts →
	Indirect evidence “RECONAL is a medium sized company which has been operating in Europe since 1993.” Source: RevenueBase Database · checked Sep 22, 2026
20	Kloeber UK LTD	Partial evidence	Somersham, United KingdomHQ checked Sep 22, 2026	51-200	30 contacts →
	Partial evidence “Kloeber offer high quality doors, windows and advanced glazing products.” Source: RevenueBase Database · checked Sep 22, 2026
21	ODC Door And Glass Systems	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	29 contacts →
	Indirect evidence “Based in London and Poole, ODC Door & Glass Systems design, manufacture and install high-quality architectural glazing solutions, including folding sliding door systems, glass…” Source: RevenueBase Database · checked Sep 22, 2026
22	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
23	Clydebuilt Windows & Doors	Indirect evidence	Glasgow, United KingdomHQ checked Sep 22, 2026	51-200	24 contacts →
	Indirect evidence “Clydebuilt Group is based in Glasgow with depots in Aberdeen and Elgin, covering all of Scotland.” Source: RevenueBase Database · checked Sep 22, 2026
24	Roofglaze	Indirect evidence	St. Neots, United KingdomHQ checked Sep 22, 2026	51-200	24 contacts →
	Indirect evidence “Lighting up your spaces for over 25 years.” Source: RevenueBase Database · checked Sep 22, 2026
25	Urban Design & Developments	Indirect evidence	Chesterfield, United KingdomHQ checked Sep 22, 2026	51-200	23 contacts →
	Indirect evidence “For over 20 years Urban Design & Developments Ltd has been one of the UK's leading specialists in the Design, Manufacture and Installation of Glass Canopies, Polycarbonate…” 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: skylights and window 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 skylights and window companies.
Partial evidence: Its own public description names part of skylights and window companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name skylights and window 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 519 skylights and window companies based in the United Kingdom

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Skylights and window companies based in the United Kingdom at a glance

As of Sep 22, 2026

32.3%Verified-email coverage

7.3Average contacts per company

11-50Median size (employees)

7.7%Largest-city concentration · London

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

247

11-50

182

51-200

201-500

501-1,000

1,001-5,000

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 519 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 skylights and window 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 “skylights and window 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 skylights and window 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 skylights and window 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, 1,229 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.

Skylights and window companies by metro

Skylights and window companies in London40

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 skylights and window 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 skylights and window companies are there based in the United Kingdom?

RevenueBase identified 519 skylights and window 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 skylights and window companies?

London leads with 40 headquartered companies, followed by Norwich (8) and Bristol (7).

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 1,229 verified decision-maker contacts tracked across these 519 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.