Company lists · Data refreshed September 2026

Top 25 Toxicology research laboratories based in the United Kingdom

Name: Toxicology research laboratories based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 72 companies tracked

RevenueBase identified 72 toxicology research laboratories headquartered in the United Kingdom as of September 2026 and tracks 1,221 professional contacts across them, including 438 with verified work emails. London is the largest hub.

This list covers toxicology research laboratories 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 22, 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 22, 2026 86% judged on-target in blind review

72Companies

1,221Contacts tracked

438Verified emails

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The 25 largest toxicology research laboratories based in the United Kingdom

Ranked by team size

Top 25 of 72 toxicology research laboratories based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to toxicology research laboratories: 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	Yordas Group	Indirect evidence	Lancaster, United KingdomHQ checked Sep 22, 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 22, 2026
2	Huntingdon Life Sciences	Indirect evidence	Huntingdon, United KingdomHQ checked Sep 22, 2026	1,001-5,000	106 contacts →
	Indirect evidence “Huntingdon Life Sciences was founded in 1952.” Source: RevenueBase Database · checked Sep 22, 2026
3	Apconix	Partial evidence	Macclesfield, United KingdomHQ checked Sep 22, 2026	11-50	64 contacts →
	Partial evidence “ApconiX was formed by three AstraZeneca colleagues with the drive and ambition to create a world-renowned company known for its expertise in nonclinical safety toxicology and ion…” Source: RevenueBase Database · checked Sep 22, 2026
4	CEMAS	Indirect evidence	Wokingham, United KingdomHQ checked Sep 22, 2026	51-200	63 contacts →
	Indirect evidence “CEMAS is an independent analytical laboratory with over 35 years’ experience supporting the agrochemical, biocide and life science sectors.” Source: RevenueBase Database · checked Sep 22, 2026
5	Gentronix, Part Of Scantox Group	Partial evidence	Alderley Edge, United KingdomHQ checked Sep 22, 2026	51-200	54 contacts →
	Partial evidence “Gentronix was founded in as a specialist CRO delivering predictive toxicology products and services to global chemical sectors.” Source: RevenueBase Database · checked Sep 22, 2026
6	Scymaris	Indirect evidence	Brixham, United KingdomHQ checked Sep 22, 2026	51-200	52 contacts →
	Indirect evidence “Scymaris Ltd is headquartered in Brixham, Devon UK.” Source: RevenueBase Database · checked Sep 22, 2026
7	Cawood	Indirect evidence	Bracknell, United KingdomHQ checked Sep 22, 2026	501-1,000	51 contacts →
	Indirect evidence “Cawood is the UK’s leading independent scientific group, recognised for its technical capability and value-added service to customers.” Source: RevenueBase Database · checked Sep 22, 2026
8	Labcorp Limited	Indirect evidence	Princes Risborough, United KingdomHQ checked Sep 22, 2026	11-50	48 contacts →
	Indirect evidence “We believe in harnessing science for human good.” Source: RevenueBase Database · checked Sep 22, 2026
9	EPP Edinburgh Pharmaceutical Processes LTD	Partial evidence	Penicuik, United KingdomHQ checked Sep 22, 2026	11-50	44 contacts →
	Partial evidence “Your GLP Contract Research Organisation of Choice EPP specialises in analytical and research & development to help companies achieve product registration around the world with…” Source: RevenueBase Database · checked Sep 22, 2026
10	Analytical Services International	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	11-50	31 contacts →
	Partial evidence “For over 30 years, ASI has worked internationally with leading Clinical Research Organisations and across the pharmaceutical sector in drug discovery and pharmacovigilance…” Source: RevenueBase Database · checked Sep 22, 2026
11	Blue Frog Scientific	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 22, 2026	11-50	30 contacts →
	Indirect evidence “Blue Frog Scientific is a leading scientific and regulatory affairs consultancy, recognised for our commitment to quality, innovation, and scientific excellence.” Source: RevenueBase Database · checked Sep 22, 2026
12	Inter Scientific	Indirect evidence	Liverpool, United KingdomHQ checked Sep 22, 2026	11-50	26 contacts →
	Indirect evidence “Our goal is to make regulation and compliance testing simple.” Source: RevenueBase Database · checked Sep 22, 2026
13	Vitis Regulatory	Partial evidence	Canterbury, United KingdomHQ checked Sep 22, 2026	11-50	22 contacts →
	Partial evidence “Based in Kent, UK, Brussels, Belgium and Bockenem, Germany, Vitis Regualtory delivers expert environmental and toxicology consultancy on the assessment and management of the…” Source: RevenueBase Database · checked Sep 22, 2026
14	Alcyomics	Partial evidence	Newcastle Upon Tyne, United KingdomHQ checked Sep 22, 2026	11-50	15 contacts →
	Partial evidence “Alcyomics is a specialist clinical research organization (CRO) supporting the pharmaceutical, biotechnology, and cosmetics industries.” Source: RevenueBase Database · checked Sep 22, 2026
15	Bibra Toxicology Advice & Consulting	Partial evidence	Wallington, United KingdomHQ checked Sep 22, 2026	11-50	14 contacts →
	Partial evidence “Bibra toxicology advice & consulting is one of Europe's leading chemical hazard and risk assessment organisations; providing assistance across a broad range of industries.” Source: RevenueBase Database · checked Sep 22, 2026
16	Pebble Biotechnology Laboratories	Partial evidence	Styal, United KingdomHQ checked Sep 22, 2026	11-50	13 contacts →
	Partial evidence “Our next-generation LIVING-ORGAN systems support researchers in developing tangible healthcare products and innovations.” Source: RevenueBase Database · checked Sep 22, 2026
17	Aspire-Labs	Indirect evidence	East Dagenham, United KingdomHQ checked Sep 22, 2026	11-50	12 contacts →
	Indirect evidence “Aspire Labs is a privately held contract analytical and microbiology testing lab in London.” Source: RevenueBase Database · checked Sep 22, 2026
18	DNA Workplace	Indirect evidence	Frome, United KingdomHQ checked Sep 22, 2026	11-50	10 contacts →
	Indirect evidence “As experts in scientific testing for over 18 years, our leadership teams have worked with trusted providers of drug, alcohol, health and virus testing kits to launch comprehensive…” Source: RevenueBase Database · checked Sep 22, 2026
19	Marfleet Analytical Services	Indirect evidence	Hull, United KingdomHQ checked Sep 22, 2026	1-10	9 contacts →
	Indirect evidence “Marfleet Analytical Services Ltd are an independent, analytical laboratory specialising in the analysis and evaluation of materials and products for a wide range of industrial…” Source: RevenueBase Database · checked Sep 22, 2026
20	CXR Biosciences The Investigative And Exploratory Toxicology Company NOW Concept Life Sciences	Indirect evidence	Dundee, United KingdomHQ checked Sep 22, 2026	11-50	9 contacts →
	Indirect evidence “CXR Biosciences is now Concept Life Sciences.” Source: RevenueBase Database · checked Sep 22, 2026
21	Hoeford Research Limited	Partial evidence	Gosport, United KingdomHQ checked Sep 22, 2026	11-50	7 contacts →
	Partial evidence “For nearly 60 years pharmaceutical companies, vaccine researchers and manufacturers, biopharmaceutical startups and their investors as well as chemical and agrochemical…” Source: RevenueBase Database · checked Sep 22, 2026
22	Attogroup	Indirect evidence	Badersfield, United KingdomHQ checked Sep 22, 2026	11-50	7 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
23	David Norris Analytical Laboratories LTD	Partial evidence	Dartford, United KingdomHQ checked Sep 22, 2026	11-50	6 contacts →
	Partial evidence “David Norris Analytical Laboratories Limited is a privately owned independent Company established in 2005.” Source: RevenueBase Database · checked Sep 22, 2026
24	Mambo-Tox	Indirect evidence	Southampton, United KingdomHQ checked Sep 22, 2026	11-50	6 contacts →
	Indirect evidence “Mambo-Tox started at the University of Southampton as the Agrochemical Evaluation Unit (AEU) in 1984 providing terrestrial ecotoxicology studies.” Source: RevenueBase Database · checked Sep 22, 2026
25	Attosure	Indirect evidence	Norwich, United KingdomHQ checked Sep 22, 2026	11-50	6 contacts →
	Indirect evidence “Our mission is to make workplaces and healthcare settings safer by reducing incidents and overdoses related to substance abuse.” Source: RevenueBase Database · checked Sep 22, 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: toxicology research laboratories. 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 toxicology research laboratories.
Partial evidence: Its own public description names part of toxicology research laboratories, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name toxicology research laboratories. 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 72 toxicology research laboratories based in the United Kingdom

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Toxicology research laboratories based in the United Kingdom at a glance

As of Sep 22, 2026

35.9%Verified-email coverage

17.0Average contacts per company

11-50Median size (employees)

8.3%Largest-city concentration · London

Sep 22, 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 72 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 toxicology research laboratories, 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 “toxicology research laboratories”. 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 toxicology research laboratories), 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 toxicology research laboratories, 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, 438 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 22, 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 toxicology research laboratories, 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 toxicology research laboratories are there based in the United Kingdom?

RevenueBase identified 72 toxicology research laboratories 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?

Yordas Group, headquartered in Lancaster, tops this list with the largest team on record.

Which city has the most toxicology research laboratories?

London leads with 6 headquartered companies, followed by Manchester (4) and Nottingham (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 438 verified decision-maker contacts tracked across these 72 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 22, 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.