Company lists · Data refreshed September 2026

Top 25 Pharmaceutical clinical trial organizations based in the United Kingdom

Name: Pharmaceutical clinical trial organizations 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 556 companies tracked

RevenueBase identified 556 company matches for pharmaceutical clinical trial organizations associated with the United Kingdom as of September 2026 and tracks 21,358 professional contacts across them, including 10,728 with verified work emails. London is the largest hub.

This list covers company matches for pharmaceutical clinical trial organizations associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built

556Companies

21,358Contacts tracked

10,728Verified emails

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The 25 largest pharmaceutical clinical trial organizations based in the United Kingdom

Ranked by team size

Top 25 of 556 company matches for pharmaceutical clinical trial organizations based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Almac Group	Exact match	Craigavon, United KingdomHQ recorded Sep 17, 2026	5,001-10,000	4,577 contacts →
	Exact match “Partnering to Advance Human Health A unique culture delivering exceptional solutions: Almac is a financially secure, privately owned organisation with 7,800+ employees globally.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Primevigilance	Exact match	Guildford, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	1,295 contacts →
	Exact match “PrimeVigilance, an Ergomed Group company, was established in 2008 by Dr.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Perceptive INC	Exact match	London, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	1,197 contacts →
	Exact match “Expanding on their combined 50-year history, Perceptive provides best-in-class specialist support to global pharmaceutical, biotech, and clinical research organizations, spanning…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Sygnature Discovery	Exact match	Nottingham, United KingdomHQ recorded Sep 17, 2026	501-1,000	582 contacts →
	Exact match “At Sygnature Discovery, a global drug discovery CRO, we create exceptional scientific outcomes.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	O2h Discovery	Exact match	Cambridge, United KingdomHQ recorded Sep 17, 2026	501-1,000	521 contacts →
	Exact match “Founded in 2005, o2h discovery is a Contract Research Organisation which has an integrated drug discovery platform operating from our state-of-the-art research centre in India and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	CALYX	Exact match	Nottingham, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	452 contacts →
	Exact match “Calyx and Invicro are now Perceptive!” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Veramed	Exact match	London, United KingdomHQ recorded Sep 17, 2026	501-1,000	438 contacts →
	Exact match “Veramed is a Clinical Research Organization (CRO) that provides expert data management, biostatistics and programming services to the pharmaceutical and biotech industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Clinigen Clinical Supplies Management	Exact match	Burton-on-trent, United KingdomHQ recorded Sep 17, 2026	501-1,000	405 contacts →
	Exact match “Clinigen combines market-leading clinical trial supplies such as packaging and labelling, global storage and distribution, comparator sourcing, as well as biological sample…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Phastar	Exact match	London, United KingdomHQ recorded Sep 17, 2026	501-1,000	387 contacts →
	Exact match “Phastar is an award-winning specialist biometrics and data science CRO, trusted by pharma, biotech, and medical device companies worldwide.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	MAC Clinical Research	Exact match	Blackpool, United KingdomHQ recorded Sep 17, 2026	201-500	333 contacts →
	Exact match “MAC Clinical Research is a leading full-service, global Contract Research Organisation (CRO) with over 30 years of experience in clinical trial management.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	WEP Clinical	Exact match	London, United KingdomHQ recorded Sep 17, 2026	201-500	321 contacts →
	Exact match “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)…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Simbec-Orion	Exact match	Merthyr Tydfil, United KingdomHQ recorded Sep 17, 2026	201-500	312 contacts →
	Exact match “Our passion for improving patients’ lives motivates us to apply our skills, experience, and knowledge to advance medicine.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Futuremeds	Exact match	Liverpool, United KingdomHQ recorded Sep 17, 2026	501-1,000	282 contacts →
	Exact match “FutureMeds is an independent, fully-owned European Site Network and DCT service provider dedicated to running patient-centric clinical trials and delivering quality data for the…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Hammersmith Medicines Research LTD	Exact match	London, United KingdomHQ recorded Sep 17, 2026	201-500	230 contacts →
	Exact match “HMR is a Contract Research Organisation (CRO).” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	HVIVO	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	214 contacts →
	Exact match “hVIVO plc (Ticker: HVO) is a science‑led early‑phase drug development company purpose‑built to meet the growing complexity of modern clinical research.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Concept Life Sciences	Exact match	High Peak, United KingdomHQ recorded Sep 17, 2026	201-500	209 contacts →
	Exact match “Concept Life Sciences is a knowledge-based, science-led and customer-focused contract research and manufacturing organisation with world-leading expertise in the pharmaceutical…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Illingworth Research Group A Syneos Health Company	Exact match	Macclesfield, United KingdomHQ recorded Sep 17, 2026	51-200	208 contacts →
	Exact match “Illingworth Research Group™, a Syneos Health® company, is a leading provider of clinical research home health services, providing highly trained, qualified and experienced…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Richmond Pharmacology	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	198 contacts →
	Exact match “At Richmond, we're on a mission to transform healthcare by delivering faster answers and turning hope into tangible solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Quanticate	Exact match	Hitchin, United KingdomHQ recorded Sep 17, 2026	201-500	192 contacts →
	Exact match “Quanticate is a leading global data focused clinical research organisation (CRO) primarily focused on the management, analysis and reporting of data from clinical trials and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Synexa Life Sciences	Exact match	Manchester, United KingdomHQ recorded Sep 17, 2026	201-500	166 contacts →
	Exact match “Synexa Life Sciences is a biomarker and bioanalytical lab CRO, specialising in the development, validation, and delivery of a wide range of complex and custom-designed assays.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Vigilare	Exact match	Ruislip, United KingdomHQ recorded Sep 17, 2026	51-200	150 contacts →
	Exact match “We are Vigilare BioPharma, a global Regulatory partner for Pharmaceuticals, Generics, Consumer Healthcare Products and Medical Devices.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Mdgroup	Exact match	Bracknell, United KingdomHQ recorded Sep 17, 2026	51-200	139 contacts →
	Exact match “We’re on a mission to make life better for patients taking part in clinical trials around the world-and for the caregivers who support them.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Clintec	Exact match	Glasgow, United KingdomHQ recorded Sep 17, 2026	501-1,000	136 contacts →
	Exact match “Clintec, an IQVIA company, is an innovative, medium-sized, global Contract Research Organization providing global full and functional service support to the pharmaceutical…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Panthera Biopartners	Exact match	Preston, United KingdomHQ recorded Sep 17, 2026	11-50	127 contacts →
	Exact match “Panthera is an independent SMO working with pharmaceutical and contract research organizations to find the right patient, for the right trial, at the right time through the…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Transpharmation LTD	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	119 contacts →
	Exact match “Transpharmation is a contract research organisation led by scientists.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “pharmaceutical clinical trial organizations”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 556 pharmaceutical clinical trial organizations based in the United Kingdom

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Pharmaceutical clinical trial organizations based in the United Kingdom at a glance

As of Sep 17, 2026

50.2%Verified-email coverage

38.4Average contacts per company

1-10Median size (employees)

25.2%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

279

11-50

157

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 556 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United Kingdom whose business descriptions match “pharmaceutical clinical trial organizations” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 10,728 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “pharmaceutical clinical trial organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many pharmaceutical clinical trial organizations are there based in the United Kingdom?

RevenueBase identified 556 company matches for pharmaceutical clinical trial organizations associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Almac Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most pharmaceutical clinical trial organizations?

London leads with 140 company records, followed by Nottingham (19) and Manchester (18).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 10,728 professional contacts with verified work emails tracked across these 556 companies; direct dials are available where recorded.

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 SmartSearch, 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.