Company lists · Data refreshed September 2026

Top 25 Industrial hygiene testing companies based in the United Kingdom

Name: Industrial hygiene testing 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 17, 2026 136 companies tracked

RevenueBase identified 136 industrial hygiene testing companies headquartered in the United Kingdom as of September 2026 and tracks 2,662 professional contacts across them, including 1,257 with verified work emails. London is the largest hub.

This list covers industrial hygiene testing 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 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

136Companies

2,662Contacts tracked

1,257Verified emails

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The 25 largest industrial hygiene testing companies based in the United Kingdom

Ranked by team size

Top 25 of 136 industrial hygiene testing companies 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 industrial hygiene testing 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	HSL Compliance	Indirect evidence	Ross On Wye, United KingdomHQ checked Sep 17, 2026	501-1,000	236 contacts →
	Indirect evidence “HSL Compliance are one of the leading companies in the legal compliance market and we are able to offer many specialist services.” Source: RevenueBase Database · checked Sep 17, 2026
2	Normec I2 Analytical	Partial evidence	Hertfordshire, United KingdomHQ checked Sep 17, 2026	201-500	218 contacts →
	Partial evidence “Founded in 2003, Normec i2 Analytical is one of Europe's leading environmental testing companies providing its customers a comprehensive range of analytical, monitoring and…” Source: RevenueBase Database · checked Sep 17, 2026
3	Rock Compliance	Indirect evidence	Alcester, United KingdomHQ checked Sep 17, 2026	501-1,000	165 contacts →
	Indirect evidence “Rock Compliance is a progressive company in the Water, Air and Asbestos compliance markets.” Source: RevenueBase Database · checked Sep 17, 2026
4	Lucion Services LTD	Partial evidence	Gateshead, United KingdomHQ checked Sep 17, 2026	501-1,000	132 contacts →
	Partial evidence “Established in 2002, Lucion Services has gone on to become the UK’s leading provider of trusted hazardous materials testing, surveying and consultancy.” Source: RevenueBase Database · checked Sep 17, 2026
5	Institute Of Occupational Medicine IOM	Partial evidence	Edinburgh, United KingdomHQ checked Sep 17, 2026	51-200	116 contacts →
	Partial evidence “We are a long-standing, independent organisation which offers research, consulting and services in occupational and environmental health, asbestos services, workplace hygiene and…” Source: RevenueBase Database · checked Sep 17, 2026
6	Bradley Environmental Consultants Limited	Indirect evidence	Halesowen, United KingdomHQ checked Sep 17, 2026	51-200	113 contacts →
	Indirect evidence “Bradley Environmental, Powered by Vadella, is one of the UK's leading asbestos, environmental and health and safety consultancies.” Source: RevenueBase Database · checked Sep 17, 2026
7	Yordas Group	Indirect evidence	Lancaster, United KingdomHQ checked Sep 17, 2026	51-200	112 contacts →
	Indirect evidence “In 2026, Yordas Group was acquired by 3E, the leading global provider of expert-led AI compliance solutions for chemical and workplace safety, product stewardship, and sustainable…” Source: RevenueBase Database · checked Sep 17, 2026
8	Life Environmental Services	Indirect evidence	Bishops Stortford, United KingdomHQ checked Sep 17, 2026	51-200	107 contacts →
	Indirect evidence “Life Environmental Services \| Asbestos, Water, Fire & Mould Management Consultancy.” Source: RevenueBase Database · checked Sep 17, 2026
9	Eeuk Group	Indirect evidence	Stoke-on-trent, United KingdomHQ checked Sep 17, 2026	51-200	85 contacts →
	Indirect evidence “EEUK Group cover a diverse and specialist range of statutory obligations focusing on employee health, safety and wellbeing in the workplace.” Source: RevenueBase Database · checked Sep 17, 2026
10	Assurity Consulting LTD	Indirect evidence	Horsham, United KingdomHQ checked Sep 17, 2026	51-200	77 contacts →
	Indirect evidence “Founded in 1986, Assurity Consulting is an independent workplace compliance consultancy specialising in health, safety and environmental solutions, partnering with responsible…” Source: RevenueBase Database · checked Sep 17, 2026
11	WCS Group	Partial evidence	Gloucester, United KingdomHQ checked Sep 17, 2026	1,001-5,000	72 contacts →
	Partial evidence “WCS Group is the leading water treatment, water hygiene, air hygiene and Asbestos specialist with 1700+ staff nationally.” Source: RevenueBase Database · checked Sep 17, 2026
12	Riverside Environmental Services LTD	Indirect evidence	Hextable, United KingdomHQ checked Sep 17, 2026	51-200	65 contacts →
	Indirect evidence “Nationwide independent workplace risk monitoring and management.” Source: RevenueBase Database · checked Sep 17, 2026
13	Franks Portlock Consulting Limited	Partial evidence	Sunderland, United KingdomHQ checked Sep 17, 2026	51-200	54 contacts →
	Partial evidence “Franks Portlock offers a comprehensive range of asbestos and water hygiene services.” Source: RevenueBase Database · checked Sep 17, 2026
14	Cura Terrae	Indirect evidence	Sheffield, United KingdomHQ checked Sep 17, 2026	201-500	50 contacts →
	Indirect evidence “Our mission is to provide services and solutions to help take care of the Earth.” Source: RevenueBase Database · checked Sep 17, 2026
15	Casella	Indirect evidence	Kempston, United KingdomHQ checked Sep 17, 2026	51-200	47 contacts →
	Indirect evidence “Casella are global leaders in noise, dust and vibration monitoring.” Source: RevenueBase Database · checked Sep 17, 2026
16	Zeta Services	Indirect evidence	Bicester, United KingdomHQ checked Sep 17, 2026	51-200	44 contacts →
	Indirect evidence “At Zeta Services, we understand that managing health, safety and environmental obligations in the workplace can be a demanding and complicated process.” Source: RevenueBase Database · checked Sep 17, 2026
17	System Hygienics LTD	Partial evidence	Polegate, United KingdomHQ checked Sep 17, 2026	11-50	42 contacts →
	Partial evidence “At System Hygienics, we pride ourselves on being industry leaders in providing clean air and a safe environment for your employees, patients, and customers.” Source: RevenueBase Database · checked Sep 17, 2026
18	Envirochem Analytical Laboratories LTD	Indirect evidence	Fareham, United KingdomHQ checked Sep 17, 2026	51-200	42 contacts →
	Indirect evidence “At Envirochem, we empower businesses to stay compliant, safe, and efficient with our industry-leading environmental risk mitigation services.” Source: RevenueBase Database · checked Sep 17, 2026
19	Gully Howard Technical	Partial evidence	Portsmouth, United KingdomHQ checked Sep 17, 2026	51-200	38 contacts →
	Partial evidence “Gully Howard Technical Ltd is a UKAS-accredited asbestos and occupational hygiene consultancy, alongside a specialist training provider.” Source: RevenueBase Database · checked Sep 17, 2026
20	Airmec Essential Services	Partial evidence	Bradley Stoke, United KingdomHQ checked Sep 17, 2026	51-200	36 contacts →
	Partial evidence “Airmec Essential Services is one of the few remaining independent specialists in air and water hygiene, and one of the few firms that can offer a complete, seamless fire damper…” Source: RevenueBase Database · checked Sep 17, 2026
21	Allium Environmental LTD	Indirect evidence	Truro, United KingdomHQ checked Sep 17, 2026	11-50	28 contacts →
	Indirect evidence “Asbestos surveying is a crucial process whether ensuring safety during the normal occupation of a building or when preparing for refurbishment or demolition.” Source: RevenueBase Database · checked Sep 17, 2026
22	Marchwood	Partial evidence	Marchwood, United KingdomHQ checked Sep 17, 2026	51-200	28 contacts →
	Partial evidence “Marchwood, part of Cawood, is a leading UK Dioxin and Furans analysis laboratory and the UK’s leading specialist laboratory for independent occupational hygiene analysis, offering…” Source: RevenueBase Database · checked Sep 17, 2026
23	Safety Management Limited SML	Indirect evidence	Daventry, United KingdomHQ checked Sep 17, 2026	11-50	24 contacts →
	Indirect evidence “Safety Management Ltd Consultancy provides a hands on common sense approach, delivered by competent, qualified and highly experienced health and safety professionals Our Health…” Source: RevenueBase Database · checked Sep 17, 2026
24	Brodextrident	Partial evidence	Formby Liverpool, United KingdomHQ checked Sep 17, 2026	51-200	21 contacts →
	Partial evidence “BrodexTrident Ltd is an experienced environmental compliance company that specialises in water hygiene, water treatment and air hygiene services.” Source: RevenueBase Database · checked Sep 17, 2026
25	Ayerst Environmental Limited	Indirect evidence	Beckenham, United KingdomHQ checked Sep 17, 2026	11-50	21 contacts →
	Indirect evidence “Ayerst Environmental Ltd, were established in 1982 and registered as a private limited company in 1985, with over 30 years’ industry experience.” 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: industrial hygiene testing 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 industrial hygiene testing companies.
Partial evidence: Its own public description names part of industrial hygiene testing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial hygiene testing 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 136 industrial hygiene testing companies based in the United Kingdom

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Industrial hygiene testing companies based in the United Kingdom at a glance

As of Sep 17, 2026

47.2%Verified-email coverage

19.6Average contacts per company

11-50Median size (employees)

3.7%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 136 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 industrial hygiene testing 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 “industrial hygiene testing 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 industrial hygiene testing 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 industrial hygiene testing 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, 1,257 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 industrial hygiene testing 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 industrial hygiene testing companies are there based in the United Kingdom?

RevenueBase identified 136 industrial hygiene testing 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?

HSL Compliance, headquartered in Ross On Wye, tops this list with the largest team on record.

Which city has the most industrial hygiene testing companies?

London leads with 5 headquartered companies, followed by Horsham (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 1,257 verified decision-maker contacts tracked across these 136 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.