Company lists · Data refreshed September 2026
Top 25 Patient recruitment firms based in the United Kingdom
RevenueBase identified 141 company matches for patient recruitment firms associated with the United Kingdom as of September 2026 and tracks 5,654 professional contacts across them, including 1,885 with verified work emails and 829 with mobile numbers. London is the largest hub.
This list covers company matches for patient 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 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.
The 25 largest patient recruitment firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 5, 2026 · View company records in RevenueBase | |||||
| 2 | 452 contacts → | ||||
Exact match “Calyx and Invicro are now Perceptive!” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 3 | 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 5, 2026 · View company records in RevenueBase | |||||
| 4 | 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 5, 2026 · View company records in RevenueBase | |||||
| 5 | 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 5, 2026 · View company records in RevenueBase | |||||
| 6 | 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 5, 2026 · View company records in RevenueBase | |||||
| 7 | 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 5, 2026 · View company records in RevenueBase | |||||
| 8 | 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 5, 2026 · View company records in RevenueBase | |||||
| 9 | 95 contacts → | ||||
Exact match “Innovative Trials was built around a simple belief, patient recruitment works better when people feel supported.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 10 | 43 contacts → | ||||
Exact match “Medicys is a leading provider of healthcare fieldwork solutions, specialising in recruiting patients and healthcare professionals (HCPs) for Health Economics and Outcomes Research…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 11 | 42 contacts → | ||||
Exact match “ARC's purpose is to expedite access to precision medicine clinical trials for patients globally.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 12 | 39 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 · Sep 5, 2026 · View company records in RevenueBase | |||||
| 13 | 36 contacts → | ||||
Exact match “Founded in 2019, Apsida Life Science is a specialist recruitment business Headquartered in Surrey, with offices in London UK, Boston USA and Pretoria, SA.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 14 | 35 contacts → | ||||
Exact match “End-to-end CRO services Strategic consultation for all aspects of your trial Customizing an optimal trial design Fit-for-purpose data End-to-end patient focused services Quick…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 15 | 33 contacts → | ||||
Exact match “GKA is a specialist medical market research fieldwork agency based in the UK.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 16 | 32 contacts → | ||||
Exact match “Global Perspectives, an IQVIA business, specialize in engaging large numbers of hard-to-reach patients, healthcare professionals and payers to take part in scientific studies.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 17 | 28 contacts → | ||||
Exact match “Since 1997 Synergy Medical has been providing nationwide recruitment support across specialist healthcare sectors; matching the right people to the right roles to deliver the best…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 18 | 25 contacts → | ||||
Exact match “Clinvigilant Research is a leading provider of comprehensive services to the life sciences industry, specializing in Contract Research Organization (CRO) services, eClinical…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 19 | 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 · Sep 5, 2026 · View company records in RevenueBase | |||||
| 20 | 16 contacts → | ||||
Exact match “LDA Research are experts in providing a comprehensive fieldwork service, specialising in the pharmaceutical and medical sectors.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 21 | 12 contacts → | ||||
Exact match “Paspigioni is a full-service contract research organisation dedicated to excellence in clinical trials of pharmaceutical, biotech, and medical devices.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 22 | 12 contacts → | ||||
Exact match “Since our establishment in 2009, O4 Research has been providing novel, intelligent Clinical Research Solutions proven to deliver studies for our Pharmaceutical, Biotech and…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 23 | 11 contacts → | ||||
Exact match “Tailored Clinical Research Solutions (TCRS) is a CRO whose founders have detailed knowledge of the clinical research landscape across Europe and the US.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 24 | 11 contacts → | ||||
Exact match “Momentum-Pharma was established with the aim of helping Biotechs, CROs and Pharmaceutical companies supplement their teams.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 25 | 10 contacts → | ||||
Exact match “4MCS is a privately owned Dedicated Clinical Research Sites in the UK with Head Office in Manchester (UK).” Recorded in the RevenueBase company graph · Sep 5, 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 “patient 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 141 patient recruitment firms based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 1,885 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Patient recruitment firms based in the United Kingdom at a glance
As of Sep 5, 2026Companies by employee count
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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 “patient 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 1,885 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 5, 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.
Patient 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 “patient recruitment firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many patient recruitment firms are there based in the United Kingdom?
RevenueBase identified 141 company matches for patient recruitment firms 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?
Perceptive INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most patient recruitment firms?
London leads with 39 company records, followed by Manchester (7) and Nottingham (4).
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 1,885 professional contacts with verified work emails tracked across these 141 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 5, 2026.
Ready to reach these companies? Verified emails and direct dials for all 141 patient recruitment firms based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Patient recruitment firms by geography
- Patient recruitment firms based in the United States
- Patient recruitment firms based in Australia
- Patient recruitment firms based in Germany
- Patient recruitment firms based in Canada
- Patient recruitment firms based in France
- Patient recruitment firms based in Poland
- Patient recruitment firms based in London, United Kingdom
- Patient recruitment firms based in Houston, United States
- Patient recruitment firms based in Miami, United States
- Patient recruitment firms based in New York, United States
- Patient recruitment firms based in India
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
- Patient recruitment firms based in the United States
- Patient recruitment firms based in Australia
- Patient recruitment firms based in Germany
- Patient recruitment firms based in Canada
- Patient recruitment firms based in France
- Patient recruitment firms based in Poland
Company intelligence · public preview
Top 25 patient 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 141 matching company records for patient recruitment firms based in the United Kingdom, with 5,654 tracked contacts and 1,885 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: September 5, 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 patient 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 |  Perceptive INCperceptive.comHQ: London, United KingdomReported employees: 1,001-5,000 | 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 · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  CALYXcalyx.aiHQ: Nottingham, United KingdomReported employees: 1,001-5,000 | Nottingham, United Kingdom | 1,001-5,000 | Exact match | 452 contacts → |
“Calyx and Invicro are now Perceptive!” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  WEP Clinicalwepclinical.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 321 contacts → |
“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 description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Simbec-Orionsimbecorion.comHQ: Merthyr Tydfil, United KingdomReported employees: 201-500 | Merthyr Tydfil, United Kingdom | 201-500 | Exact match | 312 contacts → |
“Our passion for improving patients’ lives motivates us to apply our skills, experience, and knowledge to advance medicine.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Illingworth Research Group A Syneos Health Companyillingworthresearch.comHQ: Macclesfield, United KingdomReported employees: 51-200 | Macclesfield, United Kingdom | 51-200 | Exact match | 208 contacts → |
“Illingworth Research Group™, a Syneos Health® company, is a leading provider of clinical research home health services, providing highly trained, qualified and experienced…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Richmond Pharmacologyrichmondpharmacology.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 198 contacts → |
“At Richmond, we're on a mission to transform healthcare by delivering faster answers and turning hope into tangible solutions.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Mdgroupmdgroup.comHQ: Bracknell, United KingdomReported employees: 51-200 | Bracknell, United Kingdom | 51-200 | Exact match | 139 contacts → |
“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 description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Panthera Biopartnerspanthera-bio.comHQ: Preston, United KingdomReported employees: 11-50 | Preston, United Kingdom | 11-50 | Exact match | 127 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 · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Innovative Trialsinnovativetrials.comHQ: Letchworth Garden City, United KingdomReported employees: 51-200 | Letchworth Garden City, United Kingdom | 51-200 | Exact match | 95 contacts → |
“Innovative Trials was built around a simple belief, patient recruitment works better when people feel supported.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Medicysmedicysltd.co.ukHQ: Sittingbourne, United KingdomReported employees: 51-200 | Sittingbourne, United Kingdom | 51-200 | Exact match | 43 contacts → |
“Medicys is a leading provider of healthcare fieldwork solutions, specialising in recruiting patients and healthcare professionals (HCPs) for Health Economics and Outcomes Research…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  ARC Regulatoryarc-regulatory.comHQ: Belfast, United KingdomReported employees: 11-50 | Belfast, United Kingdom | 11-50 | Exact match | 42 contacts → |
“ARC's purpose is to expedite access to precision medicine clinical trials for patients globally.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Esms Global LTDesmsglobal.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 39 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 · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Apsida Life Scienceapsida.co.ukHQ: Surrey, United KingdomReported employees: 11-50 | Surrey, United Kingdom | 11-50 | Exact match | 36 contacts → |
“Founded in 2019, Apsida Life Science is a specialist recruitment business Headquartered in Surrey, with offices in London UK, Boston USA and Pretoria, SA.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  PVR People. Value. Researchpv-r.comHQ: Ipswich, United KingdomReported employees: 51-200 | Ipswich, United Kingdom | 51-200 | Exact match | 35 contacts → |
“End-to-end CRO services Strategic consultation for all aspects of your trial Customizing an optimal trial design Fit-for-purpose data End-to-end patient focused services Quick…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  GKAgilliankenny.comHQ: Cheltenham, United KingdomReported employees: 11-50 | Cheltenham, United Kingdom | 11-50 | Exact match | 33 contacts → |
“GKA is a specialist medical market research fieldwork agency based in the UK.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Global Perspectives, An Iqvia Businessglobal-perspectives.comHQ: Reading, United KingdomReported employees: 11-50 | Reading, United Kingdom | 11-50 | Exact match | 32 contacts → |
“Global Perspectives, an IQVIA business, specialize in engaging large numbers of hard-to-reach patients, healthcare professionals and payers to take part in scientific studies.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Synergy Medical Recruitmentsynergymedicalrec.co.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 28 contacts → |
“Since 1997 Synergy Medical has been providing nationwide recruitment support across specialist healthcare sectors; matching the right people to the right roles to deliver the best…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Clinvigilant Researchclinvigilant.comHQ: Dartford, United KingdomReported employees: 51-200 | Dartford, United Kingdom | 51-200 | Exact match | 25 contacts → |
“Clinvigilant Research is a leading provider of comprehensive services to the life sciences industry, specializing in Contract Research Organization (CRO) services, eClinical…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Research Organisation KC LTDrokcservices.comHQ: London, United KingdomReported employees: 11-50 | 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 · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  LDA Research LTDldaresearch.co.ukHQ: Chesham, United KingdomReported employees: 1-10 | Chesham, United Kingdom | 1-10 | Exact match | 16 contacts → |
“LDA Research are experts in providing a comprehensive fieldwork service, specialising in the pharmaceutical and medical sectors.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Paspigionipaspigioni.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 12 contacts → |
“Paspigioni is a full-service contract research organisation dedicated to excellence in clinical trials of pharmaceutical, biotech, and medical devices.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  O4 Research LTDo4research.comHQ: Belfast, United KingdomReported employees: 11-50 | Belfast, United Kingdom | 11-50 | Exact match | 12 contacts → |
“Since our establishment in 2009, O4 Research has been providing novel, intelligent Clinical Research Solutions proven to deliver studies for our Pharmaceutical, Biotech and…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Tcr-Solutionstcr-solutions.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 11 contacts → |
“Tailored Clinical Research Solutions (TCRS) is a CRO whose founders have detailed knowledge of the clinical research landscape across Europe and the US.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Momentum Pharma LTDmomentum-pharma.comHQ: Hereford, United KingdomReported employees: 1-10 | Hereford, United Kingdom | 1-10 | Exact match | 11 contacts → |
“Momentum-Pharma was established with the aim of helping Biotechs, CROs and Pharmaceutical companies supplement their teams.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | 4 Medical Clinical Solutions 4mcs4mcs.co.uk HQ: Manchester, United KingdomReported employees: 11-50 | Manchester, United Kingdom | 11-50 | Exact match | 10 contacts → |
“4MCS is a privately owned Dedicated Clinical Research Sites in the UK with Head Office in Manchester (UK).” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 141 company matches
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Patient recruitment firms: dataset insights
September 5, 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
141 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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: September 5, 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 ↗
Patient recruitment firms by metro
Questions about this company list
What does Exact match mean for patient 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 patient recruitment firms did RevenueBase find based in the United Kingdom?
The saved snapshot records 141 matching company records, 5,654 tracked contacts and 1,885 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: September 5, 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
Patient recruitment firms by geography
- Patient recruitment firms based in the United States
- Patient recruitment firms based in Australia
- Patient recruitment firms based in Germany
- Patient recruitment firms based in Canada
- Patient recruitment firms based in France
- Patient recruitment firms based in Poland
- Patient recruitment firms based in London, United Kingdom
- Patient recruitment firms based in Houston, United States
- Patient recruitment firms based in Miami, United States
- Patient recruitment firms based in New York, United States
- Patient recruitment firms based in India
Cite this list
RevenueBase Data Team. Top 25 patient recruitment firms based in the United Kingdom. Snapshot: September 5, 2026. https://revenuebase.ai/companies/patient-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
- Patient recruitment firms based in the United States
- Patient recruitment firms based in Australia
- Patient recruitment firms based in Germany
- Patient recruitment firms based in Canada
- Patient recruitment firms based in France
- Patient recruitment firms based in Poland
Company intelligence · public preview
Top 25 patient recruitment firms based in the United Kingdom
RevenueBase records 141 matching company records for patient recruitment firms based in the United Kingdom, with 5,654 tracked contacts and 1,885 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: September 5, 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 patient 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 | Perceptive INCperceptive.com HQ: London, United KingdomReported employees: 1,001-5,000 | 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 · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | CALYXcalyx.ai HQ: Nottingham, United KingdomReported employees: 1,001-5,000 | Nottingham, United Kingdom | 1,001-5,000 | Exact match | 452 contacts → |
“Calyx and Invicro are now Perceptive!” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | WEP Clinicalwepclinical.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 321 contacts → |
“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 description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Simbec-Orionsimbecorion.com HQ: Merthyr Tydfil, United KingdomReported employees: 201-500 | Merthyr Tydfil, United Kingdom | 201-500 | Exact match | 312 contacts → |
“Our passion for improving patients’ lives motivates us to apply our skills, experience, and knowledge to advance medicine.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Illingworth Research Group A Syneos Health Companyillingworthresearch.com HQ: Macclesfield, United KingdomReported employees: 51-200 | Macclesfield, United Kingdom | 51-200 | Exact match | 208 contacts → |
“Illingworth Research Group™, a Syneos Health® company, is a leading provider of clinical research home health services, providing highly trained, qualified and experienced…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Richmond Pharmacologyrichmondpharmacology.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 198 contacts → |
“At Richmond, we're on a mission to transform healthcare by delivering faster answers and turning hope into tangible solutions.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Mdgroupmdgroup.com HQ: Bracknell, United KingdomReported employees: 51-200 | Bracknell, United Kingdom | 51-200 | Exact match | 139 contacts → |
“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 description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Panthera Biopartnerspanthera-bio.com HQ: Preston, United KingdomReported employees: 11-50 | Preston, United Kingdom | 11-50 | Exact match | 127 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 · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Innovative Trialsinnovativetrials.com HQ: Letchworth Garden City, United KingdomReported employees: 51-200 | Letchworth Garden City, United Kingdom | 51-200 | Exact match | 95 contacts → |
“Innovative Trials was built around a simple belief, patient recruitment works better when people feel supported.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Medicysmedicysltd.co.uk HQ: Sittingbourne, United KingdomReported employees: 51-200 | Sittingbourne, United Kingdom | 51-200 | Exact match | 43 contacts → |
“Medicys is a leading provider of healthcare fieldwork solutions, specialising in recruiting patients and healthcare professionals (HCPs) for Health Economics and Outcomes Research…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | ARC Regulatoryarc-regulatory.com HQ: Belfast, United KingdomReported employees: 11-50 | Belfast, United Kingdom | 11-50 | Exact match | 42 contacts → |
“ARC's purpose is to expedite access to precision medicine clinical trials for patients globally.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Esms Global LTDesmsglobal.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 39 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 · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Apsida Life Scienceapsida.co.uk HQ: Surrey, United KingdomReported employees: 11-50 | Surrey, United Kingdom | 11-50 | Exact match | 36 contacts → |
“Founded in 2019, Apsida Life Science is a specialist recruitment business Headquartered in Surrey, with offices in London UK, Boston USA and Pretoria, SA.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | PVR People. Value. Researchpv-r.com HQ: Ipswich, United KingdomReported employees: 51-200 | Ipswich, United Kingdom | 51-200 | Exact match | 35 contacts → |
“End-to-end CRO services Strategic consultation for all aspects of your trial Customizing an optimal trial design Fit-for-purpose data End-to-end patient focused services Quick…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | GKAgilliankenny.com HQ: Cheltenham, United KingdomReported employees: 11-50 | Cheltenham, United Kingdom | 11-50 | Exact match | 33 contacts → |
“GKA is a specialist medical market research fieldwork agency based in the UK.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Global Perspectives, An Iqvia Businessglobal-perspectives.com HQ: Reading, United KingdomReported employees: 11-50 | Reading, United Kingdom | 11-50 | Exact match | 32 contacts → |
“Global Perspectives, an IQVIA business, specialize in engaging large numbers of hard-to-reach patients, healthcare professionals and payers to take part in scientific studies.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Synergy Medical Recruitmentsynergymedicalrec.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 28 contacts → |
“Since 1997 Synergy Medical has been providing nationwide recruitment support across specialist healthcare sectors; matching the right people to the right roles to deliver the best…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Clinvigilant Researchclinvigilant.com HQ: Dartford, United KingdomReported employees: 51-200 | Dartford, United Kingdom | 51-200 | Exact match | 25 contacts → |
“Clinvigilant Research is a leading provider of comprehensive services to the life sciences industry, specializing in Contract Research Organization (CRO) services, eClinical…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Research Organisation KC LTDrokcservices.com HQ: London, United KingdomReported employees: 11-50 | 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 · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | LDA Research LTDldaresearch.co.uk HQ: Chesham, United KingdomReported employees: 1-10 | Chesham, United Kingdom | 1-10 | Exact match | 16 contacts → |
“LDA Research are experts in providing a comprehensive fieldwork service, specialising in the pharmaceutical and medical sectors.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Paspigionipaspigioni.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 12 contacts → |
“Paspigioni is a full-service contract research organisation dedicated to excellence in clinical trials of pharmaceutical, biotech, and medical devices.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | O4 Research LTDo4research.com HQ: Belfast, United KingdomReported employees: 11-50 | Belfast, United Kingdom | 11-50 | Exact match | 12 contacts → |
“Since our establishment in 2009, O4 Research has been providing novel, intelligent Clinical Research Solutions proven to deliver studies for our Pharmaceutical, Biotech and…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Tcr-Solutionstcr-solutions.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 11 contacts → |
“Tailored Clinical Research Solutions (TCRS) is a CRO whose founders have detailed knowledge of the clinical research landscape across Europe and the US.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Momentum Pharma LTDmomentum-pharma.com HQ: Hereford, United KingdomReported employees: 1-10 | Hereford, United Kingdom | 1-10 | Exact match | 11 contacts → |
“Momentum-Pharma was established with the aim of helping Biotechs, CROs and Pharmaceutical companies supplement their teams.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | 4 Medical Clinical Solutions 4mcs4mcs.co.uk HQ: Manchester, United KingdomReported employees: 11-50 | Manchester, United Kingdom | 11-50 | Exact match | 10 contacts → |
“4MCS is a privately owned Dedicated Clinical Research Sites in the UK with Head Office in Manchester (UK).” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 141 company matches
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Patient recruitment firms: dataset insights
September 5, 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
141 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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: September 5, 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 ↗
Patient recruitment firms by metro
Questions about this company list
What does Exact match mean for patient 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 patient recruitment firms did RevenueBase find based in the United Kingdom?
The saved snapshot records 141 matching company records, 5,654 tracked contacts and 1,885 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: September 5, 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.
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Cite this list
RevenueBase Data Team. Top 25 patient recruitment firms based in the United Kingdom. Snapshot: September 5, 2026. https://revenuebase.ai/companies/patient-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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