Company lists · Data refreshed August 2026
Top 25 Clinical trial recruitment firms based in the United Kingdom
RevenueBase identified 212 company matches for clinical trial recruitment firms associated with the United Kingdom as of August 2026 and tracks 10,379 professional contacts across them, including 4,927 with verified work emails and 1,882 with mobile numbers. London is the largest hub.
This list covers company matches for clinical trial recruitment firms 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 August 31, 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.
The 25 largest clinical trial recruitment firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,637 contacts → | ||||
Exact match “Premier Research International LLC (Premier) is a global leader in clinical research and consulting services with expertise in driving an efficient and effective path to market…” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 2 | 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 · Aug 31, 2026 · View company records in RevenueBase | |||||
| 3 | 623 contacts → | ||||
Exact match “Clinical trials are designed around endpoints, but it’s the beginning that sets them up for success-including selecting the best RTSM partner for continuous and flexible support…” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 4 | 572 contacts → | ||||
Exact match “Nucleus Network is the only global provider dedicated to early phase clinical trials, with units in Australia, the USA and the UK.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 5 | 475 contacts → | ||||
Exact match “At Citeline (a Norstella company), we are a global leader in clinical trial intelligence, data, and insights for the life sciences and pharmaceutical industries.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 6 | 457 contacts → | ||||
Exact match “Calyx and Invicro are now Perceptive!” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 7 | 383 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 · Aug 31, 2026 · View company records in RevenueBase | |||||
| 8 | 347 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 · Aug 31, 2026 · View company records in RevenueBase | |||||
| 9 | 332 contacts → | ||||
Exact match “Global Reach; Local Expertise Headquartered in Paramus, New Jersey, USA with offices in Singapore, Denmark, UK, and India, our exceptional team of 500+ professionals serves…” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 10 | 308 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 · Aug 31, 2026 · View company records in RevenueBase | |||||
| 11 | 286 contacts → | ||||
Exact match “We are now Fortrea.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 12 | 213 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 · Aug 31, 2026 · View company records in RevenueBase | |||||
| 13 | 203 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 · Aug 31, 2026 · View company records in RevenueBase | |||||
| 14 | 168 contacts → | ||||
Exact match “Scout proudly celebrates over 30 years of empowering clinical trials with people-first solutions and industry-leading tech.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 15 | 146 contacts → | ||||
Exact match “Since our founding in 1995, LINK Medical has been a trusted partner for Biotech, Pharma, and MedTech companies across the Nordics and beyond.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 16 | 128 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 · Aug 31, 2026 · View company records in RevenueBase | |||||
| 17 | 96 contacts → | ||||
Exact match “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.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 18 | 43 contacts → | ||||
Exact match “ARC's purpose is to expedite access to precision medicine clinical trials for patients globally.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 19 | 40 contacts → | ||||
Exact match “Ellipses Pharma is an international drug development company, focused exclusively on the advancement of innovative cancer treatments through the clinic.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 20 | 37 contacts → | ||||
Exact match “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.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 21 | 33 contacts → | ||||
Exact match “ARG is now part of Evestia Clinical.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 22 | 25 contacts → | ||||
Exact match “Research Grid (R.grid) are the experts in automating clinical trials.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 23 | 24 contacts → | ||||
Exact match “Albion Rye Associates are global single sector, life sciences recruitment experts, dedicated to supporting clients in their mission to positively impact, and improve patient lives…” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 24 | 24 contacts → | ||||
Exact match “Antidote is on a mission to catalyze medical innovation by successfully connecting patients and researchers as the best-in-class recruiter for clinical studies.” Recorded in the RevenueBase company graph · Aug 31, 2026 · View company records in RevenueBase | |||||
| 25 | 23 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Aug 31, 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 “clinical trial recruitment firms”. 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 212 clinical trial recruitment firms based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 4,927 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Clinical trial recruitment firms based in the United Kingdom at a glance
As of Aug 31, 2026Companies by employee count
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 “clinical trial recruitment firms” 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 4,927 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 August 31, 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.
Clinical trial recruitment firms by metro
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 “clinical trial recruitment firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many clinical trial recruitment firms are there based in the United Kingdom?
RevenueBase identified 212 company matches for clinical trial recruitment firms associated with the United Kingdom as of August 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?
Premier Research tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most clinical trial recruitment firms?
London leads with 72 company records, followed by Manchester (12) and Glasgow (8).
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 4,927 professional contacts with verified work emails tracked across these 212 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 August 31, 2026.
Ready to reach these companies? Verified emails and direct dials for all 212 clinical trial recruitment firms based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Clinical trial recruitment firms by geography
- Clinical trial recruitment firms based in the United States
- Clinical trial recruitment firms based in Australia
- Clinical trial recruitment firms based in Germany
- Clinical trial recruitment firms based in Canada
- Clinical trial recruitment firms based in Poland
- Clinical trial recruitment firms based in France
- Clinical trial recruitment firms based in Brazil
- Clinical trial recruitment firms based in Spain
- Clinical trial recruitment firms based in Belgium
- Clinical trial recruitment firms based in the Netherlands
- Clinical trial recruitment firms based in Mexico
- Clinical trial recruitment firms based in South Africa
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Clinical trial recruitment firms based in the United States
- Clinical trial recruitment firms based in Australia
- Clinical trial recruitment firms based in Germany
- Clinical trial recruitment firms based in Canada
- Clinical trial recruitment firms based in Poland
- Clinical trial recruitment firms based in France
Company intelligence · public preview
Top 25 clinical trial recruitment firms based in the United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 212 matching company records for clinical trial recruitment firms based in the United Kingdom, with 10,379 tracked contacts and 4,927 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: August 31, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 clinical trial recruitment firms based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Premier Researchpremier-research.comHQ: HQ not recorded; location: Wokingham, United KingdomReported employees: 1,001-5,000 | HQ not recorded; location: Wokingham, United Kingdom | 1,001-5,000 | Exact match | 2,637 contacts → |
“Premier Research International LLC (Premier) is a global leader in clinical research and consulting services with expertise in driving an efficient and effective path to market…” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Perceptive INCperceptive.comHQ: HQ not recorded; location: London, United KingdomReported employees: 1,001-5,000 | HQ not recorded; location: London, United Kingdom | 1,001-5,000 | Exact match | 1,197 contacts → |
“Expanding on their combined 50-year history, Perceptive provides best-in-class specialist support to global pharmaceutical, biotech, and clinical research organizations, spanning…” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Endpoint Clinicalendpointclinical.comHQ: HQ not recorded; location: London, United KingdomReported employees: 501-1,000 | HQ not recorded; location: London, United Kingdom | 501-1,000 | Exact match | 623 contacts → |
“Clinical trials are designed around endpoints, but it’s the beginning that sets them up for success-including selecting the best RTSM partner for continuous and flexible support…” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Nucleus Networknucleusnetwork.comHQ: HQ not recorded; location: London, United KingdomReported employees: 501-1,000 | HQ not recorded; location: London, United Kingdom | 501-1,000 | Exact match | 572 contacts → |
“Nucleus Network is the only global provider dedicated to early phase clinical trials, with units in Australia, the USA and the UK.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Citelineciteline.comHQ: HQ not recorded; location: London, United KingdomReported employees: 501-1,000 | HQ not recorded; location: London, United Kingdom | 501-1,000 | Exact match | 475 contacts → |
“At Citeline (a Norstella company), we are a global leader in clinical trial intelligence, data, and insights for the life sciences and pharmaceutical industries.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  CALYXcalyx.aiHQ: HQ not recorded; location: Nottingham, United KingdomReported employees: 1,001-5,000 | HQ not recorded; location: Nottingham, United Kingdom | 1,001-5,000 | Exact match | 457 contacts → |
“Calyx and Invicro are now Perceptive!” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Phastarphastar.comHQ: HQ not recorded; location: Glasgow, United KingdomReported employees: 501-1,000 | HQ not recorded; location: Glasgow, United Kingdom | 501-1,000 | Exact match | 383 contacts → |
“Phastar is an award-winning specialist biometrics and data science CRO, trusted by pharma, biotech, and medical device companies worldwide.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  MAC Clinical Researchmacplc.comHQ: HQ not recorded; location: United KingdomReported employees: 201-500 | HQ not recorded; location: United Kingdom | 201-500 | Exact match | 347 contacts → |
“MAC Clinical Research is a leading full-service, global Contract Research Organisation (CRO) with over 30 years of experience in clinical trial management.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Tech Observertech-observer.comHQ: HQ not recorded; location: Manchester, United KingdomReported employees: 501-1,000 | HQ not recorded; location: Manchester, United Kingdom | 501-1,000 | Exact match | 332 contacts → |
“Global Reach; Local Expertise Headquartered in Paramus, New Jersey, USA with offices in Singapore, Denmark, UK, and India, our exceptional team of 500+ professionals serves…” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Simbec-Orionsimbecorion.comHQ: HQ not recorded; location: Tydfil, United KingdomReported employees: 201-500 | HQ not recorded; location: Tydfil, United Kingdom | 201-500 | Exact match | 308 contacts → |
“Our passion for improving patients’ lives motivates us to apply our skills, experience, and knowledge to advance medicine.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Theorem NOW Fortreafortrea.comHQ: HQ not recorded; location: Slough, United KingdomReported employees: 10001+ | HQ not recorded; location: Slough, United Kingdom | 10001+ | Exact match | 286 contacts → |
“We are now Fortrea.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  HVIVOhvivo.comHQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 213 contacts → |
“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 description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Richmond Pharmacologyrichmondpharmacology.comHQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 203 contacts → |
“At Richmond, we're on a mission to transform healthcare by delivering faster answers and turning hope into tangible solutions.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  SCOUTscoutclinical.comHQ: HQ not recorded; location: London, United KingdomReported employees: 201-500 | HQ not recorded; location: London, United Kingdom | 201-500 | Exact match | 168 contacts → |
“Scout proudly celebrates over 30 years of empowering clinical trials with people-first solutions and industry-leading tech.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Link Medicallinkmedical.euHQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 146 contacts → |
“Since our founding in 1995, LINK Medical has been a trusted partner for Biotech, Pharma, and MedTech companies across the Nordics and beyond.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Panthera Biopartnerspanthera-bio.comHQ: HQ not recorded; location: Preston, United KingdomReported employees: 11-50 | HQ not recorded; location: Preston, United Kingdom | 11-50 | Exact match | 128 contacts → |
“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 description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | HQ: HQ not recorded; location: Manchester, United KingdomReported employees: 51-200 | HQ not recorded; location: Manchester, United Kingdom | 51-200 | Exact match | 96 contacts → |
“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.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  ARC Regulatoryarc-regulatory.comHQ: HQ not recorded; location: Belfast, United KingdomReported employees: 11-50 | HQ not recorded; location: Belfast, United Kingdom | 11-50 | Exact match | 43 contacts → |
“ARC's purpose is to expedite access to precision medicine clinical trials for patients globally.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Ellipses Pharmaellipses.lifeHQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 40 contacts → |
“Ellipses Pharma is an international drug development company, focused exclusively on the advancement of innovative cancer treatments through the clinic.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Esms Global LTDesmsglobal.comHQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 37 contacts → |
“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.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Atlantic Research Groupatlanticresearchgroup.comHQ: HQ not recorded; location: Leatherhead, United KingdomReported employees: 51-200 | HQ not recorded; location: Leatherhead, United Kingdom | 51-200 | Exact match | 33 contacts → |
“ARG is now part of Evestia Clinical.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Research Grid R.Gridrgrid.techHQ: HQ not recorded; location: Norwich, United KingdomReported employees: 51-200 | HQ not recorded; location: Norwich, United Kingdom | 51-200 | Exact match | 25 contacts → |
“Research Grid (R.grid) are the experts in automating clinical trials.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Albion RYE Associatesalbionryeassociates.comHQ: HQ not recorded; location: Redhill, United KingdomReported employees: 11-50 | HQ not recorded; location: Redhill, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Albion Rye Associates are global single sector, life sciences recruitment experts, dedicated to supporting clients in their mission to positively impact, and improve patient lives…” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Antidote Technologiesantidote.meHQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Antidote is on a mission to catalyze medical innovation by successfully connecting patients and researchers as the best-in-class recruiter for clinical studies.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Research Organisation KC LTDrokcservices.comHQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 23 contacts → |
“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…” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 212 company matches
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Clinical trial recruitment firms: dataset insights
August 31, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
209 records in the displayed employee bands.
3 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: August 31, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Clinical trial recruitment firms by metro
Questions about this company list
What does Exact match mean for clinical trial recruitment firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many clinical trial recruitment firms did RevenueBase find based in the United Kingdom?
The saved snapshot records 212 matching company records, 10,379 tracked contacts and 4,927 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: August 31, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Clinical trial recruitment firms by geography
- Clinical trial recruitment firms based in the United States
- Clinical trial recruitment firms based in Australia
- Clinical trial recruitment firms based in Germany
- Clinical trial recruitment firms based in Canada
- Clinical trial recruitment firms based in Poland
- Clinical trial recruitment firms based in France
- Clinical trial recruitment firms based in Brazil
- Clinical trial recruitment firms based in Spain
- Clinical trial recruitment firms based in Belgium
- Clinical trial recruitment firms based in the Netherlands
- Clinical trial recruitment firms based in Mexico
- Clinical trial recruitment firms based in South Africa
Cite this list
RevenueBase Data Team. Top 25 clinical trial recruitment firms based in the United Kingdom. Snapshot: August 31, 2026. https://revenuebase.ai/companies/clinical-trial-recruitment-firms/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Clinical trial recruitment firms based in the United States
- Clinical trial recruitment firms based in Australia
- Clinical trial recruitment firms based in Germany
- Clinical trial recruitment firms based in Canada
- Clinical trial recruitment firms based in Poland
- Clinical trial recruitment firms based in France
Company intelligence · public preview
Top 25 clinical trial recruitment firms based in the United Kingdom
RevenueBase records 212 matching company records for clinical trial recruitment firms based in the United Kingdom, with 10,379 tracked contacts and 4,927 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: August 31, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 clinical trial recruitment firms based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Premier Researchpremier-research.com HQ: HQ not recorded; location: Wokingham, United KingdomReported employees: 1,001-5,000 | HQ not recorded; location: Wokingham, United Kingdom | 1,001-5,000 | Exact match | 2,637 contacts → |
“Premier Research International LLC (Premier) is a global leader in clinical research and consulting services with expertise in driving an efficient and effective path to market…” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Perceptive INCperceptive.com HQ: HQ not recorded; location: London, United KingdomReported employees: 1,001-5,000 | HQ not recorded; location: London, United Kingdom | 1,001-5,000 | Exact match | 1,197 contacts → |
“Expanding on their combined 50-year history, Perceptive provides best-in-class specialist support to global pharmaceutical, biotech, and clinical research organizations, spanning…” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Endpoint Clinicalendpointclinical.com HQ: HQ not recorded; location: London, United KingdomReported employees: 501-1,000 | HQ not recorded; location: London, United Kingdom | 501-1,000 | Exact match | 623 contacts → |
“Clinical trials are designed around endpoints, but it’s the beginning that sets them up for success-including selecting the best RTSM partner for continuous and flexible support…” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Nucleus Networknucleusnetwork.com HQ: HQ not recorded; location: London, United KingdomReported employees: 501-1,000 | HQ not recorded; location: London, United Kingdom | 501-1,000 | Exact match | 572 contacts → |
“Nucleus Network is the only global provider dedicated to early phase clinical trials, with units in Australia, the USA and the UK.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Citelineciteline.com HQ: HQ not recorded; location: London, United KingdomReported employees: 501-1,000 | HQ not recorded; location: London, United Kingdom | 501-1,000 | Exact match | 475 contacts → |
“At Citeline (a Norstella company), we are a global leader in clinical trial intelligence, data, and insights for the life sciences and pharmaceutical industries.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | CALYXcalyx.ai HQ: HQ not recorded; location: Nottingham, United KingdomReported employees: 1,001-5,000 | HQ not recorded; location: Nottingham, United Kingdom | 1,001-5,000 | Exact match | 457 contacts → |
“Calyx and Invicro are now Perceptive!” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Phastarphastar.com HQ: HQ not recorded; location: Glasgow, United KingdomReported employees: 501-1,000 | HQ not recorded; location: Glasgow, United Kingdom | 501-1,000 | Exact match | 383 contacts → |
“Phastar is an award-winning specialist biometrics and data science CRO, trusted by pharma, biotech, and medical device companies worldwide.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | MAC Clinical Researchmacplc.com HQ: HQ not recorded; location: United KingdomReported employees: 201-500 | HQ not recorded; location: United Kingdom | 201-500 | Exact match | 347 contacts → |
“MAC Clinical Research is a leading full-service, global Contract Research Organisation (CRO) with over 30 years of experience in clinical trial management.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Tech Observertech-observer.com HQ: HQ not recorded; location: Manchester, United KingdomReported employees: 501-1,000 | HQ not recorded; location: Manchester, United Kingdom | 501-1,000 | Exact match | 332 contacts → |
“Global Reach; Local Expertise Headquartered in Paramus, New Jersey, USA with offices in Singapore, Denmark, UK, and India, our exceptional team of 500+ professionals serves…” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Simbec-Orionsimbecorion.com HQ: HQ not recorded; location: Tydfil, United KingdomReported employees: 201-500 | HQ not recorded; location: Tydfil, United Kingdom | 201-500 | Exact match | 308 contacts → |
“Our passion for improving patients’ lives motivates us to apply our skills, experience, and knowledge to advance medicine.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Theorem NOW Fortreafortrea.com HQ: HQ not recorded; location: Slough, United KingdomReported employees: 10001+ | HQ not recorded; location: Slough, United Kingdom | 10001+ | Exact match | 286 contacts → |
“We are now Fortrea.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HVIVOhvivo.com HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 213 contacts → |
“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 description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Richmond Pharmacologyrichmondpharmacology.com HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 203 contacts → |
“At Richmond, we're on a mission to transform healthcare by delivering faster answers and turning hope into tangible solutions.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | SCOUTscoutclinical.com HQ: HQ not recorded; location: London, United KingdomReported employees: 201-500 | HQ not recorded; location: London, United Kingdom | 201-500 | Exact match | 168 contacts → |
“Scout proudly celebrates over 30 years of empowering clinical trials with people-first solutions and industry-leading tech.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Link Medicallinkmedical.eu HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 146 contacts → |
“Since our founding in 1995, LINK Medical has been a trusted partner for Biotech, Pharma, and MedTech companies across the Nordics and beyond.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Panthera Biopartnerspanthera-bio.com HQ: HQ not recorded; location: Preston, United KingdomReported employees: 11-50 | HQ not recorded; location: Preston, United Kingdom | 11-50 | Exact match | 128 contacts → |
“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 description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | HQ: HQ not recorded; location: Manchester, United KingdomReported employees: 51-200 | HQ not recorded; location: Manchester, United Kingdom | 51-200 | Exact match | 96 contacts → |
“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.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | ARC Regulatoryarc-regulatory.com HQ: HQ not recorded; location: Belfast, United KingdomReported employees: 11-50 | HQ not recorded; location: Belfast, United Kingdom | 11-50 | Exact match | 43 contacts → |
“ARC's purpose is to expedite access to precision medicine clinical trials for patients globally.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Ellipses Pharmaellipses.life HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 40 contacts → |
“Ellipses Pharma is an international drug development company, focused exclusively on the advancement of innovative cancer treatments through the clinic.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Esms Global LTDesmsglobal.com HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 37 contacts → |
“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.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Atlantic Research Groupatlanticresearchgroup.com HQ: HQ not recorded; location: Leatherhead, United KingdomReported employees: 51-200 | HQ not recorded; location: Leatherhead, United Kingdom | 51-200 | Exact match | 33 contacts → |
“ARG is now part of Evestia Clinical.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Research Grid R.Gridrgrid.tech HQ: HQ not recorded; location: Norwich, United KingdomReported employees: 51-200 | HQ not recorded; location: Norwich, United Kingdom | 51-200 | Exact match | 25 contacts → |
“Research Grid (R.grid) are the experts in automating clinical trials.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Albion RYE Associatesalbionryeassociates.com HQ: HQ not recorded; location: Redhill, United KingdomReported employees: 11-50 | HQ not recorded; location: Redhill, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Albion Rye Associates are global single sector, life sciences recruitment experts, dedicated to supporting clients in their mission to positively impact, and improve patient lives…” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Antidote Technologiesantidote.me HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Antidote is on a mission to catalyze medical innovation by successfully connecting patients and researchers as the best-in-class recruiter for clinical studies.” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Research Organisation KC LTDrokcservices.com HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 23 contacts → |
“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…” Recorded description excerpt · August 31, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Clinical trial recruitment firms: dataset insights
August 31, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
209 records in the displayed employee bands.
3 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: August 31, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Clinical trial recruitment firms by metro
Questions about this company list
What does Exact match mean for clinical trial recruitment firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many clinical trial recruitment firms did RevenueBase find based in the United Kingdom?
The saved snapshot records 212 matching company records, 10,379 tracked contacts and 4,927 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: August 31, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Clinical trial recruitment firms by geography
- Clinical trial recruitment firms based in the United States
- Clinical trial recruitment firms based in Australia
- Clinical trial recruitment firms based in Germany
- Clinical trial recruitment firms based in Canada
- Clinical trial recruitment firms based in Poland
- Clinical trial recruitment firms based in France
- Clinical trial recruitment firms based in Brazil
- Clinical trial recruitment firms based in Spain
- Clinical trial recruitment firms based in Belgium
- Clinical trial recruitment firms based in the Netherlands
- Clinical trial recruitment firms based in Mexico
- Clinical trial recruitment firms based in South Africa
Cite this list
RevenueBase Data Team. Top 25 clinical trial recruitment firms based in the United Kingdom. Snapshot: August 31, 2026. https://revenuebase.ai/companies/clinical-trial-recruitment-firms/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Clinical trial recruitment firms based in Germany
- Clinical trial recruitment firms based in Canada
- Clinical trial recruitment firms based in Poland
- Clinical trial recruitment firms based in France