Company lists · Data refreshed September 2026
Top 25 Regulatory affairs staffing firms based in London, United Kingdom
RevenueBase identified 177 regulatory affairs staffing firms headquartered in London, United Kingdom as of September 2026 and tracks 3,392 professional contacts across them, including 1,517 with verified work emails. Across the United Kingdom, London is the largest hub for this category.
This list covers regulatory affairs staffing firms headquartered in London, United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest regulatory affairs staffing firms based in London, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,079 contacts → | ||||
Strong evidence “APCER Life Sciences, established in 2007, is a trusted global leader in pharmacovigilance, medical information, medical writing, and regulatory affairs.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 118 contacts → | ||||
Indirect evidence “Discover International has a clear vision: to build the most outstanding life sciences recruitment partner in the industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 70 contacts → | ||||
Indirect evidence “Since 2008, i-Pharm’s independent, expert, and ethical approach to procuring talent has helped power the pioneering progress made by Pharmaceutical, Biotech and MedTech companies…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 42 contacts → | ||||
Indirect evidence “We are Hlx Life Sciences.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 33 contacts → | ||||
Indirect evidence “Daytime Healthcare is a Dynamic Healthcare Recruitment Business with an emphasis on providing highly skilled healthcare professionals into Public and Private sector Healthcare…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 33 contacts → | ||||
Indirect evidence “Walker Cole International offers Executive Search, Talent and Interim solutions to the Pharmaceutical, Life Science and Digital Health industries.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 24 contacts → | ||||
Strong evidence “At Apotech, we are trusted Life Sciences experts specialising in Quality Assurance and Regulatory Affairs.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 20 contacts → | ||||
Indirect evidence “X4 Life Sciences partner with businesses across the entire life sciences spectrum, from early-stage R&D to commercial enterprises to provide world-class talent solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 17 contacts → | ||||
Partial evidence “MDJ Partnered Solutions is a leading recruitment agency specializing in providing expert staffing solutions to the Life Sciences sector and the broader industries of Testing…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 13 contacts → | ||||
Partial evidence “Follow us for the latest regulatory insights and strategies << Advance Regulatory Consulting is an enterprising and innovative regulatory consultancy to the pharmaceutical and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 12 contacts → | ||||
Strong evidence “In the ever-evolving world of PHARMACEUTICALS, BIOTECHNOLOGY, and MEDICAL DEVICES, securing exceptional QUALITY, TECHNICAL OPERATIONS and REGULATORY AFFAIRS talent is crucial for…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 11 contacts → | ||||
Partial evidence “Occupational Health Staffing thrives on its stellar reputation within the occupational health industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 10 contacts → | ||||
Indirect evidence “At Concilium Life Sciences, our mission is to simplify the recruitment process for Life Sciences companies, enabling them to concentrate on developing life-saving therapies and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 10 contacts → | ||||
Partial evidence “At Morula Health, regulatory and clinical medical writing is our priority.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 10 contacts → | ||||
Indirect evidence “Walsons Healthcare is a trusted partner for the next giant leap in your career in the healthcare world.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 10 contacts → | ||||
Indirect evidence “Founded in 2011, We support pharmaceutical, biotechnology and CRO organisations through a structured, consultancy-led approach across: GxP Technology & Systems Specialist delivery…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 8 contacts → | ||||
Indirect evidence “PIR International provides innovative senior level recruitment solutions to small and multinational life science organisations.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 8 contacts → | ||||
Indirect evidence “10 Years of Precision.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 8 contacts → | ||||
Strong evidence “We are Regulatory Affairs experts who specialise in the UK and EU pharmaceutical arena.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 7 contacts → | ||||
Indirect evidence “Life Science Medics is a leading boutique firm focused on the recruitment of experienced physicians in the Life Science industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 7 contacts → | ||||
Indirect evidence “By leveraging our long-lasting European expertise in, BlueDil International can help you navigate the complexities of rare disease pharma, to unleash the full potential of your…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 6 contacts → | ||||
Indirect evidence “Finding the best talent, the make the greatest change to patients globally.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 6 contacts → | ||||
Indirect evidence “Quality First International (QFI) is a global consultancy specialising in medical device regulation and compliance.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 6 contacts → | ||||
Partial evidence “Clements Partners is a modern-day staffing provider for biopharmaceutical companies.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 6 contacts → | ||||
Indirect evidence “William Parker Group specialises in placing across Pharma, Biotech, CRO, CDMO and eClinical organisations.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: regulatory affairs staffing firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names regulatory affairs staffing firms.
- Partial evidence
- Its own public description names part of regulatory affairs staffing firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name regulatory affairs staffing firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 177 regulatory affairs staffing firms based in London, United Kingdom
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Regulatory affairs staffing firms based in London, United Kingdom at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 177 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among regulatory affairs staffing firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in London, United Kingdom whose own description of what they do matches “regulatory affairs staffing firms”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names regulatory affairs staffing firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among regulatory affairs staffing firms, and records with no verified work email. Companies headquartered outside London are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 1,517 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names regulatory affairs staffing firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many regulatory affairs staffing firms are there based in London, United Kingdom?
RevenueBase identified 177 regulatory affairs staffing firms headquartered in London, United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Apcer Life Sciences, headquartered in London, tops this list with the largest team on record.
Which city in the United Kingdom has the most regulatory affairs staffing firms?
London leads the United Kingdom with 177 headquartered companies, followed by Leeds (9) and Cambridge (8).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,517 verified decision-maker contacts tracked across these 177 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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