Company lists · Data refreshed September 2026

Top 25 Extruded polystyrene manufacturers based in the United Kingdom

Name: Extruded polystyrene 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 116 companies tracked

RevenueBase identified 116 extruded polystyrene manufacturers headquartered in the United Kingdom as of September 2026 and tracks 4,499 professional contacts across them, including 2,016 with verified work emails. London is the largest hub.

This list covers extruded polystyrene 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

116Companies

4,499Contacts tracked

2,016Verified emails

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The 25 largest extruded polystyrene manufacturers based in the United Kingdom

Ranked by team size

Top 25 of 116 extruded polystyrene 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 extruded polystyrene 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	SIG PLC	Indirect evidence	Sheffield, United KingdomHQ checked Sep 30, 2026	5,001-10,000	1,059 contacts →
	Indirect evidence “SIG is a leading pan-European provider of specialist construction and insulation products.” Source: RevenueBase Database · checked Sep 30, 2026
2	Encon & Nevill Long	Indirect evidence	Wetherby, United KingdomHQ checked Sep 30, 2026	501-1,000	328 contacts →
	Indirect 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
3	Rockwool UK	Indirect evidence	Bridgend, United KingdomHQ checked Sep 30, 2026	501-1,000	178 contacts →
	Indirect evidence “ROCKWOOL Limited is part of the ROCKWOOL Group.” Source: RevenueBase Database · checked Sep 30, 2026
4	Bewi Insulation & Construction UK	Strong evidence	Gravesend, United KingdomHQ checked Sep 30, 2026	201-500	83 contacts →
	Strong 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 30, 2026
5	Engineered Foam Products	Strong evidence	Northampton, United KingdomHQ checked Sep 30, 2026	201-500	72 contacts →
	Strong evidence “Engineered Foam Products is a leading manufacturer of expanded polystyrene and polypropylene components, packaging products, and materials handling systems for many of the world’s…” 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	MAX Energy LTD	Indirect evidence	Leicester, United KingdomHQ checked Sep 30, 2026	201-500	53 contacts →
	Indirect 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 30, 2026
8	Jiffy Packaging Co. LTD	Partial evidence	Cheshire, United KingdomHQ checked Sep 30, 2026	51-200	43 contacts →
	Partial evidence “Jiffy Packaging is a leading manufacturer of polyethylene foam and bubble film products for a wide variety of end-applications in various market segments including protective…” Source: RevenueBase Database · checked Sep 30, 2026
9	Kingspan Technical Insulation LTD	Partial evidence	Basildon, United KingdomHQ checked Sep 30, 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 30, 2026
10	Styrene Packaging & Insulation LTD	Strong evidence	Bradford, United KingdomHQ checked Sep 30, 2026	51-200	38 contacts →
	Strong evidence “Welcome to Styrene Packaging & Insulation Ltd – the UK's leading manufacturer of Expanded Polystyrene (EPS) With over 46 years experience in supplying EPS for packaging…” Source: RevenueBase Database · checked Sep 30, 2026
11	Moulded Foams Limited	Indirect evidence	Blackwood, United KingdomHQ checked Sep 30, 2026	51-200	32 contacts →
	Indirect evidence “Leading moulder and designer of cellular foam, including construction foams, automotive foams and packaging foams.” Source: RevenueBase Database · checked Sep 30, 2026
12	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
13	Eurobond Laminates LTD	Partial evidence	Cardiff, United KingdomHQ checked Sep 30, 2026	51-200	31 contacts →
	Partial evidence “Eurobond is the leading designer and manufacturer of non-combustible core internal and external wall and ceiling solutions in the UK.” Source: RevenueBase Database · checked Sep 30, 2026
14	Actis Insulation	Indirect evidence	Chippenham, United KingdomHQ checked Sep 30, 2026	11-50	28 contacts →
	Indirect 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
15	Hemsec	Partial evidence	Prescot, United KingdomHQ checked Sep 30, 2026	51-200	24 contacts →
	Partial evidence “Hemsec is a leading UK based insulated panel manufacturer.” Source: RevenueBase Database · checked Sep 30, 2026
16	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
17	Sundolitt LTD UK	Strong evidence	Stirling, United KingdomHQ checked Sep 30, 2026	51-200	20 contacts →
	Strong 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 30, 2026
18	Seymour Manufacturing International SMI	Indirect evidence	Telford, United KingdomHQ checked Sep 30, 2026	11-50	18 contacts →
	Indirect 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
19	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
20	S And B EPS LTD	Strong evidence	Dudley, United KingdomHQ checked Sep 30, 2026	11-50	14 contacts →
	Strong evidence “S AND B EPS LIMITED Trading for over 45 years as a privately-owned business, we are an Expanded Polystyrene manufacturer, specializing in a variety of EPS insulation products for…” Source: RevenueBase Database · checked Sep 30, 2026
21	AIM	Indirect evidence	Crawley, United KingdomHQ checked Sep 30, 2026	51-200	14 contacts →
	Indirect evidence “Established in 1989 as an insulation converter.” Source: RevenueBase Database · checked Sep 30, 2026
22	Wray-Tech Supplies LTD	Indirect evidence	Galleywood, United KingdomHQ checked Sep 30, 2026	11-50	13 contacts →
	Indirect evidence “Innovative Insulation Solutions with Comprehensive Technical Support: Wray-tech specialises in Fire Protection, Acoustic materials, Thermal solutions, Drylining, and External…” Source: RevenueBase Database · checked Sep 30, 2026
23	Thermal Economics	Indirect evidence	Luton, United KingdomHQ checked Sep 30, 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 30, 2026
24	Isothane LTD	Partial evidence	Accrington, United KingdomHQ checked Sep 30, 2026	11-50	11 contacts →
	Partial evidence “Isothane are a leading developer and manufacturer of polyurethane technology for use in thermal insulation, waterproofing and rigid foam products.” Source: RevenueBase Database · checked Sep 30, 2026
25	Ecotherm Insulation	Indirect evidence	Basildon, United KingdomHQ checked Sep 30, 2026	51-200	11 contacts →
	Indirect evidence “EcoTherm Insulation (UK) is one of the UK's leading suppliers of PIR rigid thermal insulation.” 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: extruded polystyrene 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 extruded polystyrene manufacturers.
Partial evidence: Its own public description names part of extruded polystyrene manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name extruded polystyrene 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 116 extruded polystyrene manufacturers based in the United Kingdom

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Extruded polystyrene manufacturers based in the United Kingdom at a glance

As of Sep 30, 2026

44.8%Verified-email coverage

38.8Average contacts per company

11-50Median size (employees)

11.2%Largest-city concentration · London

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 116 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 extruded polystyrene 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 “extruded polystyrene 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 extruded polystyrene 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 extruded polystyrene 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, 2,016 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 extruded polystyrene 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 extruded polystyrene manufacturers are there based in the United Kingdom?

RevenueBase identified 116 extruded polystyrene 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?

SIG PLC, headquartered in Sheffield, tops this list with the largest team on record.

Which city has the most extruded polystyrene manufacturers?

London leads with 13 headquartered companies, followed by Birmingham (3) and Basildon (2).

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 2,016 verified decision-maker contacts tracked across these 116 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.

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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.