Company lists · Data refreshed September 2026

Top 25 Ecological insulation material companies based in the United Kingdom

Name: Ecological insulation material 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 19, 2026 305 companies tracked

RevenueBase identified 305 ecological insulation material companies headquartered in the United Kingdom as of September 2026 and tracks 4,701 professional contacts across them, including 2,070 with verified work emails. London is the largest hub.

This list covers ecological insulation material 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 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

305Companies

4,701Contacts tracked

2,070Verified emails

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

The 25 largest ecological insulation material companies based in the United Kingdom

Ranked by team size

Top 25 of 305 ecological insulation material companies 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 ecological insulation material 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	Encon & Nevill Long	Partial evidence	Wetherby, United KingdomHQ checked Sep 19, 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 19, 2026
2	Minster	Partial evidence	Coventry, United KingdomHQ checked Sep 19, 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 19, 2026
3	Rockwool UK	Indirect evidence	Bridgend, United KingdomHQ checked Sep 19, 2026	501-1,000	178 contacts →
	Indirect evidence “ROCKWOOL Limited is part of the ROCKWOOL Group.” Source: RevenueBase Database · checked Sep 19, 2026
4	Excel Industries	Indirect evidence	Gwent, United KingdomHQ checked Sep 19, 2026	11-50	106 contacts →
	Indirect evidence “Excel Fibre Technology has mastered a manufacturing process which takes waste paper and converts it into cellulose fibre for numerous applications and industries including Warmcel…” Source: RevenueBase Database · checked Sep 19, 2026
5	Instagroup LTD	Indirect evidence	Finchampstead, United KingdomHQ checked Sep 19, 2026	51-200	104 contacts →
	Indirect evidence “Established in 1980, InstaGroup are a UK leader in the energy efficiency industry, covering commercial and residential projects.” Source: RevenueBase Database · checked Sep 19, 2026
6	Bewi Insulation & Construction UK	Partial evidence	Gravesend, United KingdomHQ checked Sep 19, 2026	201-500	83 contacts →
	Partial evidence “BEWI is one of the leading manufacturers of EPS (expanded polystyrene) and XPS (extruded polystyrene) products and solutions for insulation, construction, industrial and civil…” Source: RevenueBase Database · checked Sep 19, 2026
7	Belgrade Insulations & Drylining	Partial evidence	Leeds, United KingdomHQ checked Sep 19, 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 19, 2026
8	Superglass Insulation By Etex	Indirect evidence	Stirling, United KingdomHQ checked Sep 19, 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 19, 2026
9	MAX Energy LTD	Partial evidence	Leicester, United KingdomHQ checked Sep 19, 2026	201-500	53 contacts →
	Partial evidence “Max Energy Ltd is a UK based new build construction company specialising in the sale of insulation to the new build housing sector on a supply and install basis.” Source: RevenueBase Database · checked Sep 19, 2026
10	Avonside Energy	Partial evidence	Rearsby, United KingdomHQ checked Sep 19, 2026	201-500	42 contacts →
	Partial evidence “Avonside Energy: Your Partner in Sustainable Building Solutions At Avonside Energy, we are dedicated to delivering best-in-class services across: New Build Insulation…” Source: RevenueBase Database · checked Sep 19, 2026
11	Kingspan Technical Insulation LTD	Partial evidence	Basildon, United KingdomHQ checked Sep 19, 2026	51-200	40 contacts →
	Partial 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 19, 2026
12	Homelogic	Indirect evidence	Southampton, United KingdomHQ checked Sep 19, 2026	51-200	38 contacts →
	Indirect evidence “Homelogic®, based in Southampton, Hampshire, are an innovative, forward-thinking company dedicated to bringing eco-friendly, cost effective energy saving solutions to the homes…” Source: RevenueBase Database · checked Sep 19, 2026
13	Soltherm External Insulations	Partial evidence	Milton Keynes, United KingdomHQ checked Sep 19, 2026	11-50	34 contacts →
	Partial evidence “Soltherm are producers of the highest quality EWI system in the world and our mission is to supply these building materials and solutions to the British market.” Source: RevenueBase Database · checked Sep 19, 2026
14	Cellecta LTD	Partial evidence	Rochester, United KingdomHQ checked Sep 19, 2026	51-200	32 contacts →
	Partial evidence “The UK's no.1 manufacturer of eco friendly acoustic treatments and specialist insulation products.” Source: RevenueBase Database · checked Sep 19, 2026
15	Actis Insulation	Partial evidence	Chippenham, United KingdomHQ checked Sep 19, 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 19, 2026
16	ECO 247	Indirect evidence	St Asaph, United KingdomHQ checked Sep 19, 2026	51-200	25 contacts →
	Indirect evidence “At Eco 247, we are committed to building a greener future through sustainable energy solutions.” Source: RevenueBase Database · checked Sep 19, 2026
17	Indinature	Partial evidence	Jedburgh, United KingdomHQ checked Sep 19, 2026	11-50	23 contacts →
	Partial evidence “Natural fibre thermal and acoustic insulation manufacturing specialists also serving wider non-woven markets.” Source: RevenueBase Database · checked Sep 19, 2026
18	Woolcool	Indirect evidence	Stone, United KingdomHQ checked Sep 19, 2026	51-200	22 contacts →
	Indirect evidence “Est.” Source: RevenueBase Database · checked Sep 19, 2026
19	Polyfoam XPS	Partial evidence	Hartlepool, United KingdomHQ checked Sep 19, 2026	11-50	21 contacts →
	Partial evidence “Polyfoam XPS Ltd is a leading manufacturer of closed cell, extruded polystyrene insulation.” Source: RevenueBase Database · checked Sep 19, 2026
20	MYKOR	Indirect evidence	Bristol, United KingdomHQ checked Sep 19, 2026	11-50	20 contacts →
	Indirect evidence “Mykor is pioneering the future of sustainable construction with advanced biotechnologies that prioritise both planetary and human health.” Source: RevenueBase Database · checked Sep 19, 2026
21	Adaptavate	Partial evidence	Bristol, United KingdomHQ checked Sep 19, 2026	11-50	20 contacts →
	Partial evidence “Adaptavate is an award-winning company developing and commercialising the carbon negative building materials of the future.” Source: RevenueBase Database · checked Sep 19, 2026
22	Sundolitt LTD UK	Indirect evidence	Stirling, United KingdomHQ checked Sep 19, 2026	51-200	20 contacts →
	Indirect evidence “Sundolitt Ltd is the UK business of the Sunde Group a highly respected leader in the manufacture of EPS (expanded Polystyrene) and XPS (extruded polystyrene) products.” Source: RevenueBase Database · checked Sep 19, 2026
23	ECO Systems Group LTD	Partial evidence	Harold Wood, United KingdomHQ checked Sep 19, 2026	51-200	18 contacts →
	Partial evidence “Eco Systems Group has been delivering high-quality insulation, retrofit, solar solutions & air source heat pumps across the commercial and residential sectors for over 13 years.” Source: RevenueBase Database · checked Sep 19, 2026
24	Seymour Manufacturing International SMI	Strong evidence	Telford, United KingdomHQ checked Sep 19, 2026	11-50	18 contacts →
	Strong 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 19, 2026
25	Klasse Group LTD	Indirect evidence	Swansea, United KingdomHQ checked Sep 19, 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 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: ecological insulation material 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 ecological insulation material companies.
Partial evidence: Its own public description names part of ecological insulation material companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name ecological insulation material 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 305 ecological insulation material companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,070 reachable decision-makers.

Free signup · no credit card

View the full list →

Ecological insulation material companies based in the United Kingdom at a glance

As of Sep 19, 2026

44.0%Verified-email coverage

15.4Average contacts per company

11-50Median size (employees)

7.5%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

145

11-50

112

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 305 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 ecological insulation material 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 “ecological insulation material 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 ecological insulation material 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 ecological insulation material 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, 2,070 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 ecological insulation material 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 ecological insulation material companies are there based in the United Kingdom?

RevenueBase identified 305 ecological insulation material 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?

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

Which city has the most ecological insulation material companies?

London leads with 23 headquartered companies, followed by Manchester (5) and Birmingham (4).

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 2,070 verified decision-maker contacts tracked across these 305 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.

Ready to reach these companies? Verified emails and direct dials for all 305 ecological insulation material companies based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Ecological insulation material companies 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.