Company lists · Data refreshed September 2026

Top 25 Clinical monitoring services based in the United Kingdom

Name: Clinical monitoring services based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 176 companies tracked

RevenueBase identified 176 clinical monitoring services headquartered in the United Kingdom as of September 2026 and tracks 12,631 professional contacts across them, including 6,678 with verified work emails. London is the largest hub.

This list covers clinical monitoring services 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 16, 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 16, 2026 86% judged on-target in blind review

176Companies

12,631Contacts tracked

6,678Verified emails

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The 25 largest clinical monitoring services based in the United Kingdom

Ranked by team size

Top 25 of 176 clinical monitoring services based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to clinical monitoring services: 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	Almac Group	Indirect evidence	Craigavon, United KingdomHQ checked Sep 16, 2026	5,001-10,000	4,577 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 16, 2026
2	Perceptive INC	Partial evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
3	CALYX	Indirect evidence	Nottingham, United KingdomHQ checked Sep 16, 2026	1,001-5,000	452 contacts →
	Indirect evidence “Calyx and Invicro are now Perceptive!” Source: RevenueBase Database · checked Sep 16, 2026
4	Veramed	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	501-1,000	438 contacts →
	Partial evidence “Veramed is a Clinical Research Organization (CRO) that provides expert data management, biostatistics and programming services to the pharmaceutical and biotech industry.” Source: RevenueBase Database · checked Sep 16, 2026
5	Phastar	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	501-1,000	387 contacts →
	Indirect evidence “Phastar is an award-winning specialist biometrics and data science CRO, trusted by pharma, biotech, and medical device companies worldwide.” Source: RevenueBase Database · checked Sep 16, 2026
6	MAC Clinical Research	Partial evidence	Blackpool, United KingdomHQ checked Sep 16, 2026	201-500	333 contacts →
	Partial evidence “MAC Clinical Research is a leading full-service, global Contract Research Organisation (CRO) with over 30 years of experience in clinical trial management.” Source: RevenueBase Database · checked Sep 16, 2026
7	WEP Clinical	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	201-500	321 contacts →
	Partial 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 16, 2026
8	Simbec-Orion	Indirect evidence	Merthyr Tydfil, United KingdomHQ checked Sep 16, 2026	201-500	312 contacts →
	Indirect evidence “Our passion for improving patients’ lives motivates us to apply our skills, experience, and knowledge to advance medicine.” Source: RevenueBase Database · checked Sep 16, 2026
9	Futuremeds	Partial evidence	Liverpool, United KingdomHQ checked Sep 16, 2026	501-1,000	282 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
10	HVIVO	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	214 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 16, 2026
11	Illingworth Research Group A Syneos Health Company	Partial evidence	Macclesfield, United KingdomHQ checked Sep 16, 2026	51-200	208 contacts →
	Partial evidence “Illingworth Research Group™, a Syneos Health® company, is a leading provider of clinical research home health services, providing highly trained, qualified and experienced…” Source: RevenueBase Database · checked Sep 16, 2026
12	Richmond Pharmacology	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	198 contacts →
	Indirect evidence “At Richmond, we're on a mission to transform healthcare by delivering faster answers and turning hope into tangible solutions.” Source: RevenueBase Database · checked Sep 16, 2026
13	Quanticate	Partial evidence	Hitchin, United KingdomHQ checked Sep 16, 2026	201-500	192 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 16, 2026
14	Clintec	Indirect evidence	Glasgow, United KingdomHQ checked Sep 16, 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 16, 2026
15	Panthera Biopartners	Indirect evidence	Preston, United KingdomHQ checked Sep 16, 2026	11-50	127 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
16	Medicines Evaluation Unit Ltd, An Iqvia Business	Indirect evidence	Manchester, United KingdomHQ checked Sep 16, 2026	51-200	97 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 16, 2026
17	Innovative Trials	Indirect evidence	Letchworth Garden City, United KingdomHQ checked Sep 16, 2026	51-200	95 contacts →
	Indirect evidence “Innovative Trials was built around a simple belief, patient recruitment works better when people feel supported.” Source: RevenueBase Database · checked Sep 16, 2026
18	Woodley Trial Solutions	Partial evidence	Horwich, United KingdomHQ checked Sep 16, 2026	51-200	46 contacts →
	Partial evidence “Our expertise supports clinical trials in over 150 countries worldwide.” Source: RevenueBase Database · checked Sep 16, 2026
19	Pharsafer Associates LTD	Partial evidence	Ripley, United KingdomHQ checked Sep 16, 2026	51-200	46 contacts →
	Partial evidence “Founded in 2003 by Dr Graeme Ladds, PharSafer® is a specialist Contract Research Organisation (CRO) in Global Clinical and Post Marketing Drug Safety, and Medical Services, with a…” Source: RevenueBase Database · checked Sep 16, 2026
20	Express Diagnostics	Indirect evidence	Plymouth, United KingdomHQ checked Sep 16, 2026	51-200	45 contacts →
	Indirect evidence “Express Diagnostics is now the name for Cardio Analytics medical service provision.” Source: RevenueBase Database · checked Sep 16, 2026
21	ARC Regulatory	Partial evidence	Belfast, United KingdomHQ checked Sep 16, 2026	11-50	42 contacts →
	Partial evidence “ARC's purpose is to expedite access to precision medicine clinical trials for patients globally.” Source: RevenueBase Database · checked Sep 16, 2026
22	Esms Global LTD	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	39 contacts →
	Indirect evidence “Described as "A centre of excellence" by the MHRA - ESMS Global LTD, formerly part of the Guy’s Poisons Unit, is a niche service provider based in central London.” Source: RevenueBase Database · checked Sep 16, 2026
23	Niche Science & Technology LTD	Partial evidence	Richmond, United KingdomHQ checked Sep 16, 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 16, 2026
24	Sylphid Analytics	Partial evidence	Reading, United KingdomHQ checked Sep 16, 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 16, 2026
25	POP Science	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	37 contacts →
	Indirect evidence “We are delighted to be a part of Coronado Research.” Source: RevenueBase Database · checked Sep 16, 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 monitoring services. 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 monitoring services.
Partial evidence: Its own public description names part of clinical monitoring services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name clinical monitoring services. 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 176 clinical monitoring services based in the United Kingdom

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Clinical monitoring services based in the United Kingdom at a glance

As of Sep 16, 2026

52.9%Verified-email coverage

71.8Average contacts per company

11-50Median size (employees)

27.3%Largest-city concentration · London

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

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 176 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 monitoring services, 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 monitoring services”. 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 monitoring services), 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 monitoring services, 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, 6,678 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 16, 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.

Clinical monitoring services by metro

Clinical monitoring services in London48

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 monitoring services, 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 monitoring services are there based in the United Kingdom?

RevenueBase identified 176 clinical monitoring services 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 clinical monitoring services?

London leads with 48 headquartered companies, followed by Glasgow (7) and Manchester (6).

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 6,678 verified decision-maker contacts tracked across these 176 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 16, 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.