Company lists · Data refreshed September 2026

Top 25 Pharmaceutical research outsourcing based in the United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 445 companies tracked

RevenueBase identified 445 pharmaceutical research outsourcing headquartered in the United Kingdom as of September 2026 and tracks 18,131 professional contacts across them, including 8,909 with verified work emails and 2,282 with mobile numbers. London is the largest hub.

This list covers pharmaceutical research outsourcing 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

445Companies

18,131Contacts tracked

8,909Verified emails

2,282Mobile numbers

Explore all 445 companies → Free signup · no credit card · 500 free credits

The 25 largest pharmaceutical research outsourcing based in the United Kingdom

Ranked by team size

Top 25 of 445 pharmaceutical research outsourcing based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names pharmaceutical research outsourcing: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Almac GroupIndirect evidence	Craigavon, United KingdomHQ checked Sep 5, 2026	5,001-10,000	4,577
	“Partnering to Advance Human Health A unique culture delivering exceptional solutions: Almac is a financially secure, privately owned organisation with 7,800+ employees globally.” Source: company website · checked Sep 5, 2026
2	Perceptive INCStrong evidence	London, United KingdomHQ checked Sep 5, 2026	1,001-5,000	1,197
	“Expanding on their combined 50-year history, Perceptive provides best-in-class specialist support to global pharmaceutical, biotech, and clinical research organizations, spanning…” Source: company website · checked Sep 5, 2026
3	Sygnature DiscoveryIndirect evidence	Nottingham, United KingdomHQ checked Sep 5, 2026	501-1,000	582
	“At Sygnature Discovery, a global drug discovery CRO, we create exceptional scientific outcomes.” Source: company website · checked Sep 5, 2026
4	O2h DiscoveryPartial evidence	Cambridge, United KingdomHQ checked Sep 5, 2026	501-1,000	521
	“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…” Source: company website · checked Sep 5, 2026
5	CALYXIndirect evidence	Nottingham, United KingdomHQ checked Sep 5, 2026	1,001-5,000	452
	“Calyx and Invicro are now Perceptive!” Source: company website · checked Sep 5, 2026
6	VeramedStrong evidence	London, United KingdomHQ checked Sep 5, 2026	501-1,000	438
	“Veramed is a Clinical Research Organization (CRO) that provides expert data management, biostatistics and programming services to the pharmaceutical and biotech industry.” Source: company website · checked Sep 5, 2026
7	Clinigen Clinical Supplies ManagementIndirect evidence	Burton-on-trent, United KingdomHQ checked Sep 5, 2026	501-1,000	405
	“Clinigen combines market-leading clinical trial supplies such as packaging and labelling, global storage and distribution, comparator sourcing, as well as biological sample…” Source: company website · checked Sep 5, 2026
8	PhastarIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	501-1,000	387
	“Phastar is an award-winning specialist biometrics and data science CRO, trusted by pharma, biotech, and medical device companies worldwide.” Source: company website · checked Sep 5, 2026
9	MAC Clinical ResearchPartial evidence	Blackpool, United KingdomHQ checked Sep 5, 2026	201-500	333
	“MAC Clinical Research is a leading full-service, global Contract Research Organisation (CRO) with over 30 years of experience in clinical trial management.” Source: company website · checked Sep 5, 2026
10	WEP ClinicalIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	321
	“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: company website · checked Sep 5, 2026
11	Simbec-OrionIndirect evidence	Merthyr Tydfil, United KingdomHQ checked Sep 5, 2026	201-500	312
	“Our passion for improving patients’ lives motivates us to apply our skills, experience, and knowledge to advance medicine.” Source: company website · checked Sep 5, 2026
12	Hammersmith Medicines Research LTDPartial evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	230
	“HMR is a Contract Research Organisation (CRO).” Source: company website · checked Sep 5, 2026
13	HVIVOPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	214
	“hVIVO plc (Ticker: HVO) is a science‑led early‑phase drug development company purpose‑built to meet the growing complexity of modern clinical research.” Source: company website · checked Sep 5, 2026
14	Concept Life SciencesStrong evidence	High Peak, United KingdomHQ checked Sep 5, 2026	201-500	209
	“Concept Life Sciences is a knowledge-based, science-led and customer-focused contract research and manufacturing organisation with world-leading expertise in the pharmaceutical…” Source: company website · checked Sep 5, 2026
15	Illingworth Research Group A Syneos Health CompanyPartial evidence	Macclesfield, United KingdomHQ checked Sep 5, 2026	51-200	208
	“Illingworth Research Group™, a Syneos Health® company, is a leading provider of clinical research home health services, providing highly trained, qualified and experienced…” Source: company website · checked Sep 5, 2026
16	Richmond PharmacologyIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	198
	“At Richmond, we're on a mission to transform healthcare by delivering faster answers and turning hope into tangible solutions.” Source: company website · checked Sep 5, 2026
17	Wasdell GroupStrong evidence	Swindon, United KingdomHQ checked Sep 5, 2026	501-1,000	192
	“The Wasdell Group provides the pharmaceutical and nutraceutical industries with solutions to a range of outsourcing requirements.” Source: company website · checked Sep 5, 2026
18	QuanticatePartial evidence	Hitchin, United KingdomHQ checked Sep 5, 2026	201-500	192
	“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…” Source: company website · checked Sep 5, 2026
19	CHASEPartial evidence	Edinburgh, United KingdomHQ checked Sep 5, 2026	201-500	155
	“We are a leading provider of outsourced commercial, medical and recruitment services to pharmaceutical, biotech and healthcare companies.” Source: company website · checked Sep 5, 2026
20	ClintecStrong evidence	Glasgow, United KingdomHQ checked Sep 5, 2026	501-1,000	136
	“Clintec, an IQVIA company, is an innovative, medium-sized, global Contract Research Organization providing global full and functional service support to the pharmaceutical…” Source: company website · checked Sep 5, 2026
21	Adelphi GroupPartial evidence	Macclesfield, United KingdomHQ checked Sep 5, 2026	501-1,000	123
	“The Adelphi provides a wide range of strategic support services and consulting for global pharmaceutical clients.” Source: company website · checked Sep 5, 2026
22	Transpharmation LTDPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	119
	“Transpharmation is a contract research organisation led by scientists.” Source: company website · checked Sep 5, 2026
23	Huntingdon Life SciencesIndirect evidence	Huntingdon, United KingdomHQ checked Sep 5, 2026	1,001-5,000	106
	“Huntingdon Life Sciences was founded in 1952.” Source: company website · checked Sep 5, 2026
24	ArcinovaPartial evidence	Alnwick, United KingdomHQ checked Sep 5, 2026	51-200	102
	“Arcinova, A Quotient Sciences Company, is dedicated to providing innovative contract research, development, and manufacturing services.” Source: company website · checked Sep 5, 2026
25	Medicines Evaluation Unit Ltd, An Iqvia BusinessPartial evidence	Manchester, United KingdomHQ checked Sep 5, 2026	51-200	97
	“The Medicines Evaluation Unit (MEU) Ltd, an IQVIA business, is one of the UK’s leading contract research organisations, a facility where commitment to excellence is paramount.” Source: company website · checked Sep 5, 2026

Showing 25 of 445 pharmaceutical research outsourcing based in the United Kingdom

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Pharmaceutical research outsourcing based in the United Kingdom at a glance

As of Sep 5, 2026

1-10Median size (employees)

LondonLargest hub · 112 HQs

2,282Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

226

11-50

126

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Verified emails by last verification

0–30

8,388

31–60

486

61–90

90–180

180+

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 pharmaceutical research outsourcing, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “pharmaceutical research outsourcing”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among pharmaceutical research outsourcing, 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 an evidence 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, 8,909 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 5, 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.

Pharmaceutical research outsourcing by metro

Pharmaceutical research outsourcing in London112

Frequently asked

How many pharmaceutical research outsourcing are there based in the United Kingdom?

RevenueBase identified 445 pharmaceutical research outsourcing 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?

Almac Group, headquartered in Craigavon, tops this list with the largest team on record.

Which city has the most pharmaceutical research outsourcing?

London leads with 112 headquartered companies, followed by Cambridge (14) and Nottingham (14).

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 8,909 verified decision-maker contacts tracked across these 445 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 5, 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.