Company lists · Data refreshed September 2026

Top 24 Modular cleanroom manufacturers based in the United Kingdom

Name: Modular cleanroom 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 56 companies tracked

RevenueBase identified 56 modular cleanroom manufacturers headquartered in the United Kingdom as of September 2026 and tracks 726 professional contacts across them, including 364 with verified work emails. Cambridge is the largest hub.

This list covers modular cleanroom 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

56Companies

726Contacts tracked

364Verified emails

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The 24 largest modular cleanroom manufacturers based in the United Kingdom

Ranked by team size

Top 24 of 56 modular cleanroom 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 modular cleanroom 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	Howorth AIR Tech	Indirect evidence	Bolton, United KingdomHQ checked Sep 30, 2026	51-200	123 contacts →
	Indirect evidence “In the early 1960s, Howorth’s experience and skills were applied in response to the needs of the medical profession.” Source: RevenueBase Database · checked Sep 30, 2026
2	Envair Technology	Indirect evidence	Heywood, United KingdomHQ checked Sep 30, 2026	51-200	59 contacts →
	Indirect evidence “Envair Technology is the unified brand of Envair and Total Containment Solutions (TCS), a single source provider of next generation clean air and containment systems.” Source: RevenueBase Database · checked Sep 30, 2026
3	Extract Technology LTD	Indirect evidence	Huddersfield Yorkshire, United KingdomHQ checked Sep 30, 2026	51-200	57 contacts →
	Indirect evidence “Extract Technology has over 70 years of engineering heritage in aseptic and containment systems for pharmaceutical, biopharmaceutical, nuclear containment, and radiopharmaceutical…” Source: RevenueBase Database · checked Sep 30, 2026
4	British Offsite Limited	Partial evidence	Braintree, United KingdomHQ checked Sep 30, 2026	51-200	48 contacts →
	Partial evidence “British Offsite is a highly advanced manufacturing and construction company specialising in the design and production of superstructure and interior fit modular construction…” Source: RevenueBase Database · checked Sep 30, 2026
5	Connect 2 Cleanrooms & Cleanroomshop	Partial evidence	Lancaster, United KingdomHQ checked Sep 30, 2026	11-50	38 contacts →
	Partial evidence “With trusted solutions, proven expertise, and everything you need from one reliable source, we take the complexity out of cleanroom ownership.” Source: RevenueBase Database · checked Sep 30, 2026
6	Monmouth Scientific	Indirect evidence	Bridgwater, United KingdomHQ checked Sep 30, 2026	51-200	34 contacts →
	Indirect evidence “Monmouth Scientific are specialists in clean air solutions, delivering advanced recirculating technologies that ensure safety, containment and performance for critical…” Source: RevenueBase Database · checked Sep 30, 2026
7	Contained AIR Solutions	Partial evidence	Manchester, United KingdomHQ checked Sep 30, 2026	51-200	34 contacts →
	Partial evidence “Laboratories, cleanrooms, pharmaceutical facilities, and research centres around the world trust us to deliver clean air and containment solutions that help you create safer, more…” Source: RevenueBase Database · checked Sep 30, 2026
8	Pbsc UK	Strong evidence	Mirfield, United KingdomHQ checked Sep 30, 2026	11-50	31 contacts →
	Strong evidence “PBSC designs and manufactures bespoke cleanroom and high containment systems that set recognised standards in containment engineering worldwide.” Source: RevenueBase Database · checked Sep 30, 2026
9	Asgard Controlled Environments	Partial evidence	Manchester, United KingdomHQ checked Sep 30, 2026	11-50	18 contacts →
	Partial evidence “Asgard Controlled Environments are a Turnkey Cleanroom Design and Build contractor who have a wealth of experience of designing, installing and managing the construction of…” Source: RevenueBase Database · checked Sep 30, 2026
10	Cleanroom Zone LTD	Partial evidence	Glasgow, United KingdomHQ checked Sep 30, 2026	11-50	14 contacts →
	Partial evidence “Cleanroom Zone provides a service that specializes in the cleaning of cleanrooms and controlled environments.” Source: RevenueBase Database · checked Sep 30, 2026
11	Enbloc LTD	Partial evidence	Hook, United KingdomHQ checked Sep 30, 2026	11-50	13 contacts →
	Partial evidence “Enbloc Ltd is a design and build cleanroom and containment suite construction company operating in the Pharmaceutical, Biotech, Healthcare, electronics industries.” Source: RevenueBase Database · checked Sep 30, 2026
12	MAC Zero Modular Buildings	Strong evidence	Dungannon, United KingdomHQ checked Sep 30, 2026	11-50	11 contacts →
	Strong evidence “We are an experienced manufacturer of high quality, energy efficient modular buildings, connecting design and supply chain innovation to reduce environmental impact, cost and…” Source: RevenueBase Database · checked Sep 30, 2026
13	Bassaire Cleanrooms LTD	Partial evidence	Stockport, United KingdomHQ checked Sep 30, 2026	11-50	11 contacts →
	Partial evidence “With over 60 years experience Bassaire is the longest established cleanroom company in the UK.” Source: RevenueBase Database · checked Sep 30, 2026
14	Offsite Engineering Solutions	Strong evidence	Dudley, United KingdomHQ checked Sep 30, 2026	11-50	10 contacts →
	Strong evidence “Offsite Manufacturers and installers of modular systems” Source: RevenueBase Database · checked Sep 30, 2026
15	AIR Sentry	Indirect evidence	Chippenham, United KingdomHQ checked Sep 30, 2026	11-50	8 contacts →
	Indirect evidence “Airsentry® commenced development of our Ultra Clean system in 2001.” Source: RevenueBase Database · checked Sep 30, 2026
16	Clean Room Construction LTD CRC	Partial evidence	Rochester, United KingdomHQ checked Sep 30, 2026	11-50	7 contacts →
	Partial evidence “Clean Room Construction (CRC) has been designing and building cleanrooms and controlled environments for the science and technology sector since 1967.” Source: RevenueBase Database · checked Sep 30, 2026
17	Astra Technologies UK LLP	Strong evidence	Lancing, United KingdomHQ checked Sep 30, 2026	11-50	7 contacts →
	Strong evidence “Established since 1980, Astra Group is specialised in the design and manufacture of specialist products for cleanrooms, controlled environments and hazardous areas.” Source: RevenueBase Database · checked Sep 30, 2026
18	ISO Cleanroom	Partial evidence	Wilmslow, United KingdomHQ checked Sep 30, 2026	1-10	4 contacts →
	Partial evidence “ISO Cleanroom was set up by the founder, Toni Horsfield to plug a gap in the market for accurate, simple and honest cleanroom support.” Source: RevenueBase Database · checked Sep 30, 2026
19	Dragon Cold Rooms	Partial evidence	Hengoed, United KingdomHQ checked Sep 30, 2026	1-10	3 contacts →
	Partial evidence “Whether you require custom cold rooms to fit unusual spaces or modular cold rooms to fit standard spaces, Dragon Cold Rooms can deliver.” Source: RevenueBase Database · checked Sep 30, 2026
20	Airology Systems LTD	Indirect evidence	Redditch, United KingdomHQ checked Sep 30, 2026	1-10	3 contacts →
	Indirect evidence “Airology Systems specialises in complete turnkey solutions for clean rooms and commercial air conditioning - designed, constructed and installed to your exact specications.” Source: RevenueBase Database · checked Sep 30, 2026
21	Hawker Modular	Partial evidence	Hull, United KingdomHQ checked Sep 30, 2026	11-50	3 contacts →
	Partial evidence “Hawker Modular provide bespoke modular buildings to suit any situation, ex-works, or turnkey solutions we have a flexible approach.” Source: RevenueBase Database · checked Sep 30, 2026
22	Cleanroom Projects Limited	Indirect evidence	Rossendale, United KingdomHQ checked Sep 30, 2026	1-10	2 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
23	Kiik Interiors LTD	Partial evidence	Bedfordshire, United KingdomHQ checked Sep 30, 2026	1-10	1 contacts →
	Partial evidence “Specialising in the design and build of Cleanrooms and property refurbishment, KiiK Interiors are a well established business based in Bedfordshire, working across the UK and…” Source: RevenueBase Database · checked Sep 30, 2026
24	Koettermann UK LTD	Strong evidence	Cambridge, United KingdomHQ checked Sep 30, 2026	1-10	1 contacts →
	Strong evidence “Koettermann manufacture and install the highest quality modular steel laboratory furniture and high specification fume cupboards - for all laboratory types” 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: modular cleanroom 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 modular cleanroom manufacturers.
Partial evidence: Its own public description names part of modular cleanroom manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name modular cleanroom 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 24 of 56 modular cleanroom manufacturers based in the United Kingdom

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Modular cleanroom manufacturers based in the United Kingdom at a glance

As of Sep 30, 2026

50.1%Verified-email coverage

13.0Average contacts per company

11-50Median size (employees)

3.6%Largest-city concentration · Cambridge

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 56 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 modular cleanroom 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 “modular cleanroom 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 modular cleanroom 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 modular cleanroom 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, 364 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 modular cleanroom 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 modular cleanroom manufacturers are there based in the United Kingdom?

RevenueBase identified 56 modular cleanroom 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?

Howorth AIR Tech, headquartered in United Kingdom, tops this list with the largest team on record.

Which city has the most modular cleanroom manufacturers?

Cambridge leads with 2 headquartered companies, followed by Glasgow (2) and Haverhill (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 364 verified decision-maker contacts tracked across these 56 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.