Company lists · Data refreshed September 2026

Top 25 Window and siding contractors based in the United Kingdom

Name: Window and siding contractors based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 140 companies tracked

RevenueBase identified 140 window and siding contractors headquartered in the United Kingdom as of September 2026 and tracks 456 professional contacts across them, including 74 with verified work emails. London is the largest hub.

This list covers window and siding contractors 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 19, 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 19, 2026 86% judged on-target in blind review

140Companies

456Contacts tracked

74Verified emails

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The 25 largest window and siding contractors based in the United Kingdom

Ranked by team size

Top 25 of 140 window and siding contractors based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to window and siding contractors: 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	APW Glazing Limited	Partial evidence	Cannock, United KingdomHQ checked Sep 19, 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 19, 2026
2	DW Windows LTD	Partial evidence	Wolverhampton, United KingdomHQ checked Sep 19, 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 19, 2026
3	Brackenwood Windows	Indirect evidence	Basingstoke, United KingdomHQ checked Sep 19, 2026	51-200	15 contacts →
	Indirect evidence “Brackenwood is a name you can rely on for quality.” Source: RevenueBase Database · checked Sep 19, 2026
4	SRJ Windows	Partial evidence	Rosyth, United KingdomHQ checked Sep 19, 2026	51-200	11 contacts →
	Partial evidence “SRJ Windows has been providing a quality service throughout Scotland since 1992.” Source: RevenueBase Database · checked Sep 19, 2026
5	Classic Windows	Partial evidence	Stanley, United KingdomHQ checked Sep 19, 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 19, 2026
6	Manu101 Limited	Partial evidence	Harrow, United KingdomHQ checked Sep 19, 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 19, 2026
7	West Leigh Group	Partial evidence	London, United KingdomHQ checked Sep 19, 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 19, 2026
8	Ripton Windows Limited	Partial evidence	Basingstoke, United KingdomHQ checked Sep 19, 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 19, 2026
9	Benchmark Windows LTD	Partial evidence	Lancing, United KingdomHQ checked Sep 19, 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 19, 2026
10	Correct Choice Windows & Doors LTD	Partial evidence	Sheffield, United KingdomHQ checked Sep 19, 2026	1-10	4 contacts →
	Partial evidence “Correct Choice Windows and Doors Ltd is all about bringing a new and refreshing experience to the public and commercial customer.” Source: RevenueBase Database · checked Sep 19, 2026
11	Cladwinds Limited	Partial evidence	Bedford, United KingdomHQ checked Sep 19, 2026	11-50	4 contacts →
	Partial evidence “Cladwinds Limited is a domestic and commercial window & warmer roof construction company based in Kempston, Bedford, United Kingdom.” Source: RevenueBase Database · checked Sep 19, 2026
12	Supercraft Windows	Indirect evidence	Stoke-on-trent, United KingdomHQ checked Sep 19, 2026	51-200	3 contacts →
	Indirect evidence “The company was founded in 1989 and has been very successful.” Source: RevenueBase Database · checked Sep 19, 2026
13	Cambridge Sashcraft	Partial evidence	Cambridge, United KingdomHQ checked Sep 19, 2026	11-50	3 contacts →
	Partial evidence “Cambridge Sashcraft has been sympathetically restoring and upgrading windows in Cambridge’s homes, schools and colleges since 2013.” Source: RevenueBase Database · checked Sep 19, 2026
14	Ultimate Window Systems LTD	Partial evidence	Ammanford, United KingdomHQ checked Sep 19, 2026	11-50	3 contacts →
	Partial evidence “Established in 1988, Ultimate Window Systems Ltd are proud to have built a reputation for installing only the finest quality products, using fully qualified installers, together…” Source: RevenueBase Database · checked Sep 19, 2026
15	Strata Windows	Partial evidence	Stoke-On-Trent, United KingdomHQ checked Sep 19, 2026	11-50	3 contacts →
	Partial evidence “8220;I have recently had all my windows (and previously front door) replaced by Strata windows.” Source: RevenueBase Database · checked Sep 19, 2026
16	DL Windows	Partial evidence	Calne, United KingdomHQ checked Sep 19, 2026	11-50	2 contacts →
	Partial evidence “DL Windows Ltd prides itself on undertaking a variety of installations in the commercial and domestic markets offering a superb choice of products.” Source: RevenueBase Database · checked Sep 19, 2026
17	FWD Glazing	Partial evidence	West Calder, United KingdomHQ checked Sep 19, 2026	1-10	2 contacts →
	Partial evidence “Window and door installation service for Lothian and surrounding areas.” Source: RevenueBase Database · checked Sep 19, 2026
18	M A Simmonds Installations Limited	Partial evidence	Aylesbury, United KingdomHQ checked Sep 19, 2026	1-10	2 contacts →
	Partial evidence “The company is managed by Mark & Fiona Simmonds, who met while both working for a window company, and have been involved in the window industry for over 35 years now.” Source: RevenueBase Database · checked Sep 19, 2026
19	J&j Windows & Doors LTD	Partial evidence	Maldon, United KingdomHQ checked Sep 19, 2026	11-50	1 contacts →
	Partial evidence “You local Window & Door Installation Specialists” Source: RevenueBase Database · checked Sep 19, 2026
20	Associated Windows & Conservatories	Indirect evidence	Bristol, United KingdomHQ checked Sep 19, 2026	11-50	1 contacts →
	Indirect evidence “We enjoy excellent relationships with many other local businesses and can offer quick lead times, keen pricing as well as full design and installation support.” Source: RevenueBase Database · checked Sep 19, 2026
21	Warmlight Windows	Partial evidence	Leigh, United KingdomHQ checked Sep 19, 2026	11-50	1 contacts →
	Partial evidence “Warmlight Windows are a family owned installation company, who excel not only in residential installations but also commercial contracts.” Source: RevenueBase Database · checked Sep 19, 2026
22	Evesham Trade Supercentre	Indirect evidence	Evesham, United KingdomHQ checked Sep 19, 2026	11-50	1 contacts →
	Indirect evidence “At Evesham Trade Centre, we pride ourselves on being your one-stop destination for all exterior home improvement needs.” Source: RevenueBase Database · checked Sep 19, 2026
23	Carera Windows LTD	Partial evidence	West Midlands, United KingdomHQ checked Sep 19, 2026	1-10	1 contacts →
	Partial evidence “CARERA WINDOWS LTD is a construction company based out of 24 JUNCTION ROAD, AUDNAM, WEST MIDLANDS, United Kingdom.” Source: RevenueBase Database · checked Sep 19, 2026
24	The Oxford Window Repair Company	Indirect evidence	Abingdon, United KingdomHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
25	J P Windows & Conservatories Limited	Indirect evidence	Pontyclun, United KingdomHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 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 siding contractors. 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 siding contractors.
Partial evidence: Its own public description names part of window and siding contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name window and siding contractors. 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 140 window and siding contractors based in the United Kingdom

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Window and siding contractors based in the United Kingdom at a glance

As of Sep 19, 2026

16.2%Verified-email coverage

3.3Average contacts per company

1-10Median size (employees)

7.1%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 140 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 siding contractors, 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 siding contractors”. 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 siding contractors), 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 siding contractors, 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, 74 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 19, 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 and siding contractors, 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 siding contractors are there based in the United Kingdom?

RevenueBase identified 140 window and siding contractors 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?

APW Glazing Limited, headquartered in Cannock, tops this list with the largest team on record.

Which city has the most window and siding contractors?

London leads with 10 headquartered companies, followed by Basingstoke (3) and Leicester (3).

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 74 verified decision-maker contacts tracked across these 140 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 19, 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.