Company lists · Data refreshed September 2026

Top 25 Plant-based insulation manufacturers based in the United Kingdom

Name: Plant-based 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 17, 2026 163 companies tracked

RevenueBase identified 163 plant-based insulation manufacturers headquartered in the United Kingdom as of September 2026 and tracks 2,425 professional contacts across them, including 1,092 with verified work emails. London is the largest hub.

This list covers plant-based 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 17, 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 17, 2026 86% judged on-target in blind review

163Companies

2,425Contacts tracked

1,092Verified emails

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The 25 largest plant-based insulation manufacturers based in the United Kingdom

Ranked by team size

Top 25 of 163 plant-based insulation manufacturers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to plant-based 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	Excel Industries	Indirect evidence	Gwent, United KingdomHQ checked Sep 17, 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 17, 2026
2	Instagroup LTD	Indirect evidence	Finchampstead, United KingdomHQ checked Sep 17, 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 17, 2026
3	Superglass Insulation By Etex	Indirect evidence	Stirling, United KingdomHQ checked Sep 17, 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 17, 2026
4	MAX Energy LTD	Partial evidence	Leicester, United KingdomHQ checked Sep 17, 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 17, 2026
5	TLX Insulation	Partial evidence	Bolton, United KingdomHQ checked Sep 17, 2026	11-50	49 contacts →
	Partial evidence “TLX Insulation, a division of TLX Manufacturing, produces multifoil insulation and insulating breathable membranes.” Source: RevenueBase Database · checked Sep 17, 2026
6	Avonside Energy	Partial evidence	Rearsby, United KingdomHQ checked Sep 17, 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 17, 2026
7	Kingspan Technical Insulation LTD	Strong evidence	Basildon, United KingdomHQ checked Sep 17, 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 17, 2026
8	Homelogic	Indirect evidence	Southampton, United KingdomHQ checked Sep 17, 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 17, 2026
9	Cellecta LTD	Strong evidence	Rochester, United KingdomHQ checked Sep 17, 2026	51-200	32 contacts →
	Strong evidence “The UK's no.1 manufacturer of eco friendly acoustic treatments and specialist insulation products.” Source: RevenueBase Database · checked Sep 17, 2026
10	Actis Insulation	Partial evidence	Chippenham, United KingdomHQ checked Sep 17, 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 17, 2026
11	Indinature	Partial evidence	Jedburgh, United KingdomHQ checked Sep 17, 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 17, 2026
12	Polyfoam XPS	Strong evidence	Hartlepool, United KingdomHQ checked Sep 17, 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 17, 2026
13	MYKOR	Indirect evidence	Bristol, United KingdomHQ checked Sep 17, 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 17, 2026
14	Adaptavate	Indirect evidence	Bristol, United KingdomHQ checked Sep 17, 2026	11-50	20 contacts →
	Indirect evidence “Adaptavate is an award-winning company developing and commercialising the carbon negative building materials of the future.” Source: RevenueBase Database · checked Sep 17, 2026
15	Seymour Manufacturing International SMI	Partial evidence	Telford, United KingdomHQ checked Sep 17, 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 17, 2026
16	Klasse Group LTD	Indirect evidence	Swansea, United KingdomHQ checked Sep 17, 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 17, 2026
17	Novora Building Services	Indirect evidence	Wakefield, United KingdomHQ checked Sep 17, 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 17, 2026
18	AIM	Partial evidence	Crawley, United KingdomHQ checked Sep 17, 2026	51-200	14 contacts →
	Partial evidence “Established in 1989 as an insulation converter.” Source: RevenueBase Database · checked Sep 17, 2026
19	Thermal Economics	Indirect evidence	Luton, United KingdomHQ checked Sep 17, 2026	11-50	12 contacts →
	Indirect evidence “Thermal Economics provide innovative thermal and acoustic solutions for the construction industry that are sustainable, easy to install and last the lifetime of the building.” Source: RevenueBase Database · checked Sep 17, 2026
20	Ultimate Insulation Supplies	Partial evidence	Stirling, United KingdomHQ checked Sep 17, 2026	11-50	9 contacts →
	Partial evidence “THE independent insulation, dry-lining and related materials merchant.” Source: RevenueBase Database · checked Sep 17, 2026
21	Custom Insulation Limited	Partial evidence	Burton On Trent, United KingdomHQ checked Sep 17, 2026	11-50	9 contacts →
	Partial evidence “The UK’s Strongest Independent Technically Competent Service Provider of Acoustic, Thermal & Fire Retardant Insulation Solutions.” Source: RevenueBase Database · checked Sep 17, 2026
22	H&v Insulation Supplies Limited	Partial evidence	Stapleford Abbotts, United KingdomHQ checked Sep 17, 2026	11-50	9 contacts →
	Partial evidence “H&V INSULATION SUPPLIES LIMITED is a construction company based out of UNITS1 & 2 THE MITCHELLS GUTTERIDGE LANE, STAPLEFORD ABBOTTS, United Kingdom.” Source: RevenueBase Database · checked Sep 17, 2026
23	Ibsl Group LTD	Partial evidence	Seaton Delaval, United KingdomHQ checked Sep 17, 2026	51-200	9 contacts →
	Partial evidence “IBSL have been established since 1989 as a provider of high performance insulation products.” Source: RevenueBase Database · checked Sep 17, 2026
24	Steico UK	Partial evidence	Caddington, United KingdomHQ checked Sep 17, 2026	11-50	8 contacts →
	Partial evidence “STEICO UK Ltd is a wholly owned subsidiary of STEICO SE, the Munich based manufacturers of wood based environmentally friendly products.” Source: RevenueBase Database · checked Sep 17, 2026
25	The P & M Group	Indirect evidence	Gloucester, United KingdomHQ checked Sep 17, 2026	51-200	8 contacts →
	Indirect evidence “The origins of The P&M Group go back as far as 1947.” Source: RevenueBase Database · checked Sep 17, 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: plant-based 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 plant-based insulation manufacturers.
Partial evidence: Its own public description names part of plant-based insulation manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name plant-based 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 163 plant-based insulation manufacturers based in the United Kingdom

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Plant-based insulation manufacturers based in the United Kingdom at a glance

As of Sep 17, 2026

45.0%Verified-email coverage

14.9Average contacts per company

11-50Median size (employees)

8.6%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

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 163 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 plant-based 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 “plant-based 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 plant-based 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 plant-based 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, 1,092 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 17, 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 plant-based 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 plant-based insulation manufacturers are there based in the United Kingdom?

RevenueBase identified 163 plant-based 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?

Excel Industries, headquartered in United Kingdom, tops this list with the largest team on record.

Which city has the most plant-based insulation manufacturers?

London leads with 14 headquartered companies, followed by Liverpool (4) and Bristol (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 1,092 verified decision-maker contacts tracked across these 163 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 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 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.