Company lists · Data refreshed September 2026

Top 25 Duct insulation manufacturers based in the United Kingdom

Name: Duct insulation 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 30, 2026 321 companies tracked

RevenueBase identified 321 duct insulation manufacturers headquartered in the United Kingdom as of September 2026 and tracks 4,331 professional contacts across them, including 1,920 with verified work emails. London is the largest hub.

This list covers duct insulation manufacturers 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 30, 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 30, 2026 86% judged on-target in blind review

321Companies

4,331Contacts tracked

1,920Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest duct insulation manufacturers based in the United Kingdom

Ranked by team size

Top 25 of 321 duct insulation manufacturers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to duct insulation manufacturers: 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	Encon & Nevill Long	Partial evidence	Wetherby, United KingdomHQ checked Sep 30, 2026	501-1,000	328 contacts →
	Partial evidence “Insulation, drywall, ceilings, construction products, external facades, flooring, partitioning, passive fire protection: whatever your project, Encon has the product range…” Source: RevenueBase Database · checked Sep 30, 2026
2	Minster	Partial evidence	Coventry, United KingdomHQ checked Sep 30, 2026	201-500	214 contacts →
	Partial evidence “Minster is one of the largest growing national specialist insulation and dry lining distributors in the UK.” Source: RevenueBase Database · checked Sep 30, 2026
3	Belgrade Insulations & Drylining	Partial evidence	Leeds, United KingdomHQ checked Sep 30, 2026	51-200	79 contacts →
	Partial evidence “Belgrade Insulation is a privately owned Specialist Distributor of Insulation and Drywall Systems to all sectors of the construction market.” Source: RevenueBase Database · checked Sep 30, 2026
4	A&m Insulations A&m Energy Solutions	Partial evidence	Rainford, United KingdomHQ checked Sep 30, 2026	51-200	70 contacts →
	Partial evidence “We are one of the UK's largest providers of insulation services.” Source: RevenueBase Database · checked Sep 30, 2026
5	Naylor Industries	Partial evidence	Barnsley, United KingdomHQ checked Sep 30, 2026	201-500	64 contacts →
	Partial evidence “Naylor Industries is a long-established, leading British manufacturer of building & construction products, plastic ducting, concrete, and environmental products with an…” Source: RevenueBase Database · checked Sep 30, 2026
6	Superglass Insulation By Etex	Indirect evidence	Stirling, United KingdomHQ checked Sep 30, 2026	201-500	55 contacts →
	Indirect evidence “We can offer you thermal and acoustic glass mineral wool products that meet exacting standards together with a service that’s tailored to you.” Source: RevenueBase Database · checked Sep 30, 2026
7	RGM Group	Partial evidence	Ballyclare, United KingdomHQ checked Sep 30, 2026	51-200	49 contacts →
	Partial evidence “RGM Group offers certified and accredited Ductwork, Fire & Smoke, Air Conditioning and Insulation solutions across the UK and Ireland.” Source: RevenueBase Database · checked Sep 30, 2026
8	Essex Thermal Services LTD	Partial evidence	Dartford, United KingdomHQ checked Sep 30, 2026	51-200	47 contacts →
	Partial evidence “Essex Thermal Services Ltd are a UK based company specialising in Thermal Insulation, Trace Heating, Ventilation and Air Conditioning Installs.” Source: RevenueBase Database · checked Sep 30, 2026
9	Has-Vent LTD	Partial evidence	Wolverhampton, United KingdomHQ checked Sep 30, 2026	51-200	44 contacts →
	Partial evidence “HAS-Vent Ltd is one of the leading 'supply only' manufacturers and distributors of circular and flat oval ductwork and accessories in the UK.” Source: RevenueBase Database · checked Sep 30, 2026
10	Kingspan Technical Insulation LTD	Strong evidence	Basildon, United KingdomHQ checked Sep 30, 2026	51-200	40 contacts →
	Strong evidence “We manufacture high performance insulation products for pipework and ductwork in building services / HVAC, process, petrochemical and refrigeration services applications.” Source: RevenueBase Database · checked Sep 30, 2026
11	Isoclad	Indirect evidence	North Shields, United KingdomHQ checked Sep 30, 2026	51-200	31 contacts →
	Indirect evidence “We focus on making reliable panels and supporting you at every stage.” Source: RevenueBase Database · checked Sep 30, 2026
12	Gardner & CO LTD	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	51-200	30 contacts →
	Indirect evidence “Gardner & Co leads the way with the very latest technology, whilst still upholding the finest traditions in the management and installation of sheet metal ductwork, specialising…” Source: RevenueBase Database · checked Sep 30, 2026
13	Actis Insulation	Partial evidence	Chippenham, United KingdomHQ checked Sep 30, 2026	11-50	28 contacts →
	Partial evidence “ACTIS is an innovative European insulation specialist whose vision is to develop effective and environmentally friendly ways of reducing energy consumption.” Source: RevenueBase Database · checked Sep 30, 2026
14	YBS Insulation	Partial evidence	Creswell, United KingdomHQ checked Sep 30, 2026	11-50	25 contacts →
	Partial evidence “YBS Insulation has grown steadily over the years from a one man operation producing one product in 1994 to the large manufacturing and distribution company it is today with an…” Source: RevenueBase Database · checked Sep 30, 2026
15	Doby Verrolec	Partial evidence	Stanley, United KingdomHQ checked Sep 30, 2026	51-200	23 contacts →
	Partial evidence “As the UK market leader, and largest UK manufacturer of Ductwork Jointing Systems & Components, we supply four different flange systems suiting all HVAC needs and providing the…” Source: RevenueBase Database · checked Sep 30, 2026
16	Termate Limited	Strong evidence	Nottingham, United KingdomHQ checked Sep 30, 2026	11-50	22 contacts →
	Strong evidence “Since 1947, Termate has been engineering high-performance electrical insulation components trusted by engineers and manufacturers worldwide- OUR PRODUCTS - All our products…” Source: RevenueBase Database · checked Sep 30, 2026
17	Polyfoam XPS	Strong evidence	Hartlepool, United KingdomHQ checked Sep 30, 2026	11-50	21 contacts →
	Strong evidence “Polyfoam XPS Ltd is a leading manufacturer of closed cell, extruded polystyrene insulation.” Source: RevenueBase Database · checked Sep 30, 2026
18	K&g Distribution LTD	Partial evidence	Knowsley Industrial Park, United KingdomHQ checked Sep 30, 2026	11-50	18 contacts →
	Partial evidence “K&G Distribution Ltd is a specialist stockist and distributor of thermal, fire, acoustic insulation and associated products for use in HVAC, Marine/Offshore, Petrochem, Powergen…” Source: RevenueBase Database · checked Sep 30, 2026
19	Seymour Manufacturing International SMI	Partial evidence	Telford, United KingdomHQ checked Sep 30, 2026	11-50	18 contacts →
	Partial evidence “Thermal protection perfection - we're the inventors of the acclaimed Tempro, the remarkable lightweight thermal insulation material which has been scientifically proven to cut…” Source: RevenueBase Database · checked Sep 30, 2026
20	Klasse Group LTD	Indirect evidence	Swansea, United KingdomHQ checked Sep 30, 2026	51-200	15 contacts →
	Indirect evidence “Klasse Group wants to create a safer future and drive change in the building industry to ensure that every structure is designed and fabricated with superior fire safety as a…” Source: RevenueBase Database · checked Sep 30, 2026
21	Novora Building Services	Indirect evidence	Wakefield, United KingdomHQ checked Sep 30, 2026	51-200	15 contacts →
	Indirect evidence “Novora Building Services provides a dedicated national service across the UK from a regional branch network centrally controlled from our head office in Yorkshire.” Source: RevenueBase Database · checked Sep 30, 2026
22	Linear Insulation	Partial evidence	Nottingham, United KingdomHQ checked Sep 30, 2026	11-50	15 contacts →
	Partial evidence “Established in 2006 and specialising in all aspects of Insulation and Trace Heating.” Source: RevenueBase Database · checked Sep 30, 2026
23	Tyne Insulation Supplies LTD	Partial evidence	North Shields, United KingdomHQ checked Sep 30, 2026	11-50	14 contacts →
	Partial evidence “Tyne Insulation Supplies is a leading independent insulation distributor based in the north of England.” Source: RevenueBase Database · checked Sep 30, 2026
24	AIM	Partial evidence	Crawley, United KingdomHQ checked Sep 30, 2026	51-200	14 contacts →
	Partial evidence “Established in 1989 as an insulation converter.” Source: RevenueBase Database · checked Sep 30, 2026
25	Allied Insulators LTD	Partial evidence	Stoke-on-trent, United KingdomHQ checked Sep 30, 2026	11-50	14 contacts →
	Partial evidence “Design, Manufacture & Supply of electrical insulators, insulator hardware, conductor accessories & medium voltage overhead switchgear.” Source: RevenueBase Database · checked Sep 30, 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: duct insulation manufacturers. 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 duct insulation manufacturers.
Partial evidence: Its own public description names part of duct insulation manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name duct insulation manufacturers. 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 321 duct insulation manufacturers based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,920 reachable decision-makers.

Free signup · no credit card

View the full list →

Duct insulation manufacturers based in the United Kingdom at a glance

As of Sep 30, 2026

44.3%Verified-email coverage

13.5Average contacts per company

11-50Median size (employees)

6.2%Largest-city concentration · London

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

146

11-50

128

51-200

201-500

501-1,000

1,001-5,000

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 321 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 duct insulation manufacturers, 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 “duct insulation manufacturers”. 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 duct insulation manufacturers), 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 duct insulation manufacturers, 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, 1,920 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 30, 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 duct insulation manufacturers, 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 duct insulation manufacturers are there based in the United Kingdom?

RevenueBase identified 321 duct insulation manufacturers 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?

Encon & Nevill Long, headquartered in Wetherby, tops this list with the largest team on record.

Which city has the most duct insulation manufacturers?

London leads with 20 headquartered companies, followed by Birmingham (7) and Liverpool (6).

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 1,920 verified decision-maker contacts tracked across these 321 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 30, 2026.

Ready to reach these companies? Verified emails and direct dials for all 321 duct insulation manufacturers based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Duct insulation manufacturers by geography

Browse the directory

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.