Company lists · Data refreshed September 2026

Top 25 Insulated glass unit manufacturers based in the United Kingdom

Name: Insulated glass unit manufacturers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 655 companies tracked

RevenueBase identified 655 company matches for insulated glass unit manufacturers associated with the United Kingdom as of September 2026 and tracks 7,455 professional contacts across them, including 1,970 with verified work emails. London is the largest hub.

This list covers company matches for insulated glass unit manufacturers associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built

655Companies

7,455Contacts tracked

1,970Verified emails

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The 25 largest insulated glass unit manufacturers based in the United Kingdom

Ranked by team size

Top 25 of 655 company matches for insulated glass unit manufacturers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Pilkington United Kingdom Limited	Exact match	Lancashire, United KingdomHQ recorded Sep 17, 2026	501-1,000	1,805 contacts →
	Exact match “Pilkington United Kingdom Limited, part of the NSG Group, is one of the global leaders in glass and glazing technology.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Press Glass UK	Exact match	Swansea, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	132 contacts →
	Exact match “PRESS GLASS WE ARE HERE TO MAKE A DIFFERENCE.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Emplas Window Systems	Exact match	Wellingborough, United KingdomHQ recorded Sep 17, 2026	201-500	117 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Careyglass	Exact match	Armagh, United KingdomHQ recorded Sep 17, 2026	501-1,000	102 contacts →
	Exact match “Since 1965, Carey Glass has been pushing the boundaries of what’s possible with glass, from providing safer and more energy efficient windows to contributing to stunning…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Aluk GB	Exact match	Chepstow, United KingdomHQ recorded Sep 17, 2026	201-500	98 contacts →
	Exact match “For more than 40 years across the world, AluK has been at the forefront of the design of aluminium curtain walling, window and door systems, combining unique and innovative…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Clayton Glass	Exact match	Stanley, United KingdomHQ recorded Sep 17, 2026	501-1,000	94 contacts →
	Exact match “Clayton Glass is the UK’s favourite Independent IGU supplier and the UK’s leading Conservatory Roof Glass & Composite Door Glass Manufacturer.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	KAT UK Macclesfield	Exact match	Macclesfield, United KingdomHQ recorded Sep 17, 2026	51-200	82 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	IQ Glass	Exact match	Amersham, United KingdomHQ recorded Sep 17, 2026	51-200	73 contacts →
	Exact match “IQ Glass is the UK's leader in high specification architectural glazing, supplying and installing the most pioneering architectural glass technology.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	GG Glass & Glazing LTD	Exact match	Liverpool, United KingdomHQ recorded Sep 17, 2026	51-200	72 contacts →
	Exact match “A truly national planned and emergency glazier for commercial customers such as nationwide retailers, local authorities, the leisure industry and small to medium businesses.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Schüco UK And Ireland	Exact match	Milton Keynes, United KingdomHQ recorded Sep 17, 2026	51-200	71 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Unique Window Systems LTD	Exact match	Leicester, United KingdomHQ recorded Sep 17, 2026	201-500	71 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Polyframe	Exact match	Lenwade, United KingdomHQ recorded Sep 17, 2026	201-500	66 contacts →
	Exact match “Polyframe are a multi award-winning manufacturer of high quality windows, doors and conservatories.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Obex UK	Exact match	Worcester, United KingdomHQ recorded Sep 17, 2026	51-200	62 contacts →
	Exact match “OBEX Protection Ltd is a global leader in the supply of innovative sealing and protection solutions for commercial glazing and façades.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Senior Architectural Systems	Exact match	Doncaster, United KingdomHQ recorded Sep 17, 2026	51-200	60 contacts →
	Exact match “Senior Architectural Systems (Senior) is one of the UK's leading manufacturers of aluminium fenestration solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Britplas	Exact match	Warrington, United KingdomHQ recorded Sep 17, 2026	51-200	58 contacts →
	Exact match “Britplas are experts in the design, fabrication and installation of all types of commercial glazing and curtain walling, including Schueco, Kawneer, Aluprof and Smart systems as…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	JPJ Installations LTD	Exact match	Braintree, United KingdomHQ recorded Sep 17, 2026	51-200	57 contacts →
	Exact match “JPJ Installations Ltd are specialists in Aluminium Glazing Systems including Curtain Wall, Framing, Door and Window Systems.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Fleetwood Architectural Aluminium LTD	Exact match	Slough, United KingdomHQ recorded Sep 17, 2026	51-200	56 contacts →
	Exact match “Fleetwood Architectural Aluminium (FAA) is one of the UK’s leading designers, manufacturers and installers of aluminium curtain walling, facades, windows and doors.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	CWG Choices Limited	Exact match	Corby, United KingdomHQ recorded Sep 17, 2026	201-500	50 contacts →
	Exact match “CWG Choices Ltd is a double glazing supplier of windows, doors, conservatories and garden studios/offices.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Walsin LTD	Exact match	Lisburn, United KingdomHQ recorded Sep 17, 2026	51-200	46 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	ESG Group	Exact match	Witham, United KingdomHQ recorded Sep 17, 2026	51-200	46 contacts →
	Exact match “ESG is one of the UK’s leading independent glass processors.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Granada Glazing	Exact match	Sheffield, United KingdomHQ recorded Sep 17, 2026	51-200	45 contacts →
	Exact match “Granada Glazing is the UK’s leading manufacturer of premium bespoke secondary glazing systems, trusted for over 45 years by architects, developers, contractors and property…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Cantifix LTD	Exact match	London, United KingdomHQ recorded Sep 17, 2026	11-50	40 contacts →
	Exact match “For 40 years, Cantifix has been pushing the boundaries of structural glazing, delivering bespoke architectural glass solutions for some of the UK's most ambitious residential…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Arkay Windows	Exact match	Watford, United KingdomHQ recorded Sep 17, 2026	51-200	40 contacts →
	Exact match “Arkay Windows provides a one stop shop high-end glazing solution for commercial & domestic projects.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Russell Timber Technology	Exact match	Glasgow, United KingdomHQ recorded Sep 17, 2026	51-200	39 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Dualseal Glass	Exact match	Huddersfield, United KingdomHQ recorded Sep 17, 2026	51-200	38 contacts →
	Exact match “dualseal began as a family business in 1995, strategically established in Huddersfield to supply the local market with insulating glass units (IGUs)- incorporating the…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “insulated glass unit manufacturers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 655 insulated glass unit manufacturers based in the United Kingdom

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Insulated glass unit manufacturers based in the United Kingdom at a glance

As of Sep 17, 2026

26.4%Verified-email coverage

11.4Average contacts per company

11-50Median size (employees)

7.9%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

263

11-50

237

51-200

115

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 655 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United Kingdom whose business descriptions match “insulated glass unit manufacturers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,970 professional contacts with verified work emails across the full matched dataset. 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 17, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “insulated glass unit manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many insulated glass unit manufacturers are there based in the United Kingdom?

RevenueBase identified 655 company matches for insulated glass unit manufacturers associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Pilkington United Kingdom Limited tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most insulated glass unit manufacturers?

London leads with 52 company records, followed by Birmingham (13) and Norwich (9).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,970 professional contacts with verified work emails tracked across these 655 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 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 SmartSearch, 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.