Company lists · Data refreshed September 2026

Top 25 Clinical trial law firms based in the United Kingdom

Name: Clinical trial law firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 134 companies tracked

RevenueBase identified 134 clinical trial law firms headquartered in the United Kingdom as of September 2026 and tracks 3,629 professional contacts across them, including 1,233 with verified work emails. London is the largest hub.

This list covers clinical trial law firms 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 27, 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 27, 2026 86% judged on-target in blind review

134Companies

3,629Contacts tracked

1,233Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest clinical trial law firms based in the United Kingdom

Ranked by team size

Top 25 of 134 clinical trial law firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to clinical trial law firms: 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	Perceptive INC	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	1,001-5,000	1,197 contacts →
	Partial evidence “Expanding on their combined 50-year history, Perceptive provides best-in-class specialist support to global pharmaceutical, biotech, and clinical research organizations, spanning…” Source: RevenueBase Database · checked Sep 27, 2026
2	WEP Clinical	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	321 contacts →
	Strong evidence “At WEP Clinical, we operate as a specialist CRO with a proven track record of excellence in designing, managing, and executing Clinical Trials, Expanded Access Programs (EAPs)…” Source: RevenueBase Database · checked Sep 27, 2026
3	Clintec	Indirect evidence	Glasgow, United KingdomHQ checked Sep 27, 2026	501-1,000	136 contacts →
	Indirect evidence “Clintec, an IQVIA company, is an innovative, medium-sized, global Contract Research Organization providing global full and functional service support to the pharmaceutical…” Source: RevenueBase Database · checked Sep 27, 2026
4	ARC Regulatory	Strong evidence	Belfast, United KingdomHQ checked Sep 27, 2026	11-50	42 contacts →
	Strong evidence “ARC's purpose is to expedite access to precision medicine clinical trials for patients globally.” Source: RevenueBase Database · checked Sep 27, 2026
5	Niche Science & Technology LTD	Partial evidence	Richmond, United KingdomHQ checked Sep 27, 2026	11-50	39 contacts →
	Partial evidence “Niche Science & Technology Ltd has provided a comprehensive clinical research service to a growing number of pharmaceutical clients since its inception in 1998.” Source: RevenueBase Database · checked Sep 27, 2026
6	Sylphid Analytics	Partial evidence	Reading, United KingdomHQ checked Sep 27, 2026	51-200	37 contacts →
	Partial evidence “Sylphid Analytics is a specialized Clinical Research Organization (CRO) delivering high-quality, end-to-end support to the Pharmaceutical and Biopharmaceutical industries.” Source: RevenueBase Database · checked Sep 27, 2026
7	PVR People. Value. Research	Partial evidence	Ipswich, United KingdomHQ checked Sep 27, 2026	51-200	35 contacts →
	Partial evidence “End-to-end CRO services Strategic consultation for all aspects of your trial Customizing an optimal trial design Fit-for-purpose data End-to-end patient focused services Quick…” Source: RevenueBase Database · checked Sep 27, 2026
8	Weatherden	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	29 contacts →
	Partial evidence “Weatherden is a global clinical development consultancy helping biotech and pharma realize the full potential of their science and investment.” Source: RevenueBase Database · checked Sep 27, 2026
9	Clinvigilant Research	Indirect evidence	Dartford, United KingdomHQ checked Sep 27, 2026	51-200	25 contacts →
	Indirect evidence “Clinvigilant Research is a leading provider of comprehensive services to the life sciences industry, specializing in Contract Research Organization (CRO) services, eClinical…” Source: RevenueBase Database · checked Sep 27, 2026
10	Research Organisation KC LTD	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	23 contacts →
	Strong evidence “ROKC is an innovative CRO specialising in the bespoke design, management and delivery of Pan European multi-centre clinical trials to commercial, academic and non governmental…” Source: RevenueBase Database · checked Sep 27, 2026
11	KLS LAW	Partial evidence	Warrington, United KingdomHQ checked Sep 27, 2026	11-50	23 contacts →
	Partial evidence “KLS Law is a trusted UK law firm with over 25 years of collective legal expertise, delivering practical, results-driven advice to individuals, businesses, insurers, and public…” Source: RevenueBase Database · checked Sep 27, 2026
12	QRC Consultants LTD	Partial evidence	St Ives, United KingdomHQ checked Sep 27, 2026	11-50	18 contacts →
	Partial evidence “WHO WE ARE QRC Consultants Ltd is a team of experienced QA, regulatory and clinical research professionals, dedicated to providing high quality, practical, responsive and cost…” Source: RevenueBase Database · checked Sep 27, 2026
13	Pharmexcel	Strong evidence	Welwyn Garden City, United KingdomHQ checked Sep 27, 2026	11-50	18 contacts →
	Strong evidence “PHARMExcel is an award-winning, ISO 9001:2015 certified, full-service Contract Research Organisation (CRO) providing a flexible and innovative approach to clinical trial delivery.” Source: RevenueBase Database · checked Sep 27, 2026
14	Novum LAW	Partial evidence	Swindon, United KingdomHQ checked Sep 27, 2026	51-200	17 contacts →
	Partial evidence “An Individual and Expert Approach Novum Law is a national firm specialising in Serious Injury, Medical Negligence and Asbestos illness claims.” Source: RevenueBase Database · checked Sep 27, 2026
15	Life Science LAW	Indirect evidence	Regents Park, United KingdomHQ checked Sep 27, 2026	1-10	15 contacts →
	Indirect evidence “We are a team qualified legal and compliance experts, with extensive experience working with companies in the pharmaceutical and biotech industry, providing high calibre practical…” Source: RevenueBase Database · checked Sep 27, 2026
16	Advance Regulatory Consulting	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	13 contacts →
	Indirect evidence “Follow us for the latest regulatory insights and strategies << Advance Regulatory Consulting is an enterprising and innovative regulatory consultancy to the pharmaceutical and…” Source: RevenueBase Database · checked Sep 27, 2026
17	Paspigioni	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	12 contacts →
	Strong evidence “Paspigioni is a full-service contract research organisation dedicated to excellence in clinical trials of pharmaceutical, biotech, and medical devices.” Source: RevenueBase Database · checked Sep 27, 2026
18	Tcr-Solutions	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	11 contacts →
	Partial evidence “Tailored Clinical Research Solutions (TCRS) is a CRO whose founders have detailed knowledge of the clinical research landscape across Europe and the US.” Source: RevenueBase Database · checked Sep 27, 2026
19	Momentum Pharma LTD	Indirect evidence	Hereford, United KingdomHQ checked Sep 27, 2026	1-10	11 contacts →
	Indirect evidence “Momentum-Pharma was established with the aim of helping Biotechs, CROs and Pharmaceutical companies supplement their teams.” Source: RevenueBase Database · checked Sep 27, 2026
20	Morula Health	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	10 contacts →
	Partial evidence “At Morula Health, regulatory and clinical medical writing is our priority.” Source: RevenueBase Database · checked Sep 27, 2026
21	Global Regulatory Services LTD	Indirect evidence	Ely, United KingdomHQ checked Sep 27, 2026	1-10	7 contacts →
	Indirect evidence “Global Regulatory Services (GRS) operates at the forefront of technology in the life science industry specialising in new and upcoming regulations.” Source: RevenueBase Database · checked Sep 27, 2026
22	Clinicology	Partial evidence	Guildford, United KingdomHQ checked Sep 27, 2026	201-500	7 contacts →
	Partial evidence “Clinicology is the UK subsidiary of FGK Clinical Research, a trusted full-service CRO, partnering with pharmaceutical, biotechnology, and medical device companies to transform…” Source: RevenueBase Database · checked Sep 27, 2026
23	Karma Oncology	Partial evidence	East Kilbride, United KingdomHQ checked Sep 27, 2026	11-50	6 contacts →
	Partial evidence “Karma Oncology is an oncology specialized, well-established unique clinical development company which was incorporated in 2012.” Source: RevenueBase Database · checked Sep 27, 2026
24	Onorach Clinical	Partial evidence	Dundee, United KingdomHQ checked Sep 27, 2026	11-50	6 contacts →
	Partial evidence “Onorach manage Phase I to IV clinical research studies for drug products (including biologicals (stem cells)), nutraceutical products and medical devices using a tailored…” Source: RevenueBase Database · checked Sep 27, 2026
25	Artemida Pharma Limited	Indirect evidence	Stevenage, United KingdomHQ checked Sep 27, 2026	1-10	5 contacts →
	Indirect evidence “Artemida Pharma is a drug development consultancy whose highly experienced scientists represent multiple disciplines and therapeutic areas.” Source: RevenueBase Database · checked Sep 27, 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: clinical trial law firms. 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 clinical trial law firms.
Partial evidence: Its own public description names part of clinical trial law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name clinical trial law firms. 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 134 clinical trial law firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,233 reachable decision-makers.

Free signup · no credit card

View the full list →

Clinical trial law firms based in the United Kingdom at a glance

As of Sep 27, 2026

34.0%Verified-email coverage

27.1Average contacts per company

1-10Median size (employees)

33.6%Largest-city concentration · London

Sep 27, 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 134 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 clinical trial law firms, 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 “clinical trial law firms”. 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 clinical trial law firms), 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 clinical trial law firms, 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, 1,233 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 27, 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 clinical trial law firms, 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 clinical trial law firms are there based in the United Kingdom?

RevenueBase identified 134 clinical trial law firms 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?

Perceptive INC, headquartered in London, tops this list with the largest team on record.

Which city has the most clinical trial law firms?

London leads with 45 headquartered companies, followed by Glasgow (4) and Guildford (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 1,233 verified decision-maker contacts tracked across these 134 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 27, 2026.

Ready to reach these companies? Verified emails and direct dials for all 134 clinical trial law firms based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Clinical trial law firms by geography

Browse the directory

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.