Company lists · Data refreshed September 2026

Top 25 Pharmaceutical research outsourcing based in London, United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 13, 2026 118 companies tracked

RevenueBase identified 118 pharmaceutical research outsourcing headquartered in London, United Kingdom as of September 2026 and tracks 4,860 professional contacts across them, including 2,264 with verified work emails and 597 with mobile numbers. Across the United Kingdom, London is the largest hub for this category.

This list covers pharmaceutical research outsourcing 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 13, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 13, 2026 86% judged on-target in blind review

118Companies

4,860Contacts tracked

2,264Verified emails

597Mobile numbers

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The 25 largest pharmaceutical research outsourcing based in London, United Kingdom

Ranked by team size

Top 25 of 118 pharmaceutical research outsourcing based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to pharmaceutical research outsourcing: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Perceptive INC	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	1,001-5,000	1,197 contacts →
	Strong evidence “Expanding on their combined 50-year history, Perceptive provides best-in-class specialist support to global pharmaceutical, biotech, and clinical research organizations, spanning…” Source: RevenueBase Database · checked Sep 13, 2026
2	Veramed	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	501-1,000	438 contacts →
	Strong evidence “Veramed is a Clinical Research Organization (CRO) that provides expert data management, biostatistics and programming services to the pharmaceutical and biotech industry.” Source: RevenueBase Database · checked Sep 13, 2026
3	Phastar	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	501-1,000	387 contacts →
	Indirect evidence “Phastar is an award-winning specialist biometrics and data science CRO, trusted by pharma, biotech, and medical device companies worldwide.” Source: RevenueBase Database · checked Sep 13, 2026
4	WEP Clinical	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	321 contacts →
	Indirect evidence “At WEP Clinical, we operate as a specialist CRO with a proven track record of excellence in designing, managing, and executing Clinical Trials, Expanded Access Programs (EAPs)…” Source: RevenueBase Database · checked Sep 13, 2026
5	Hammersmith Medicines Research LTD	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	230 contacts →
	Partial evidence “HMR is a Contract Research Organisation (CRO).” Source: RevenueBase Database · checked Sep 13, 2026
6	HVIVO	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	214 contacts →
	Partial evidence “hVIVO plc (Ticker: HVO) is a science‑led early‑phase drug development company purpose‑built to meet the growing complexity of modern clinical research.” Source: RevenueBase Database · checked Sep 13, 2026
7	Richmond Pharmacology	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	198 contacts →
	Indirect evidence “At Richmond, we're on a mission to transform healthcare by delivering faster answers and turning hope into tangible solutions.” Source: RevenueBase Database · checked Sep 13, 2026
8	Transpharmation LTD	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	119 contacts →
	Partial evidence “Transpharmation is a contract research organisation led by scientists.” Source: RevenueBase Database · checked Sep 13, 2026
9	Oxon Epidemiology	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	60 contacts →
	Partial evidence “OXON Epidemiology is a European full-service Contract Research Organization (CRO) specialised in real-world evidence (RWE) and observational research across all major therapeutic…” Source: RevenueBase Database · checked Sep 13, 2026
10	Esms Global LTD	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	39 contacts →
	Indirect evidence “Described as "A centre of excellence" by the MHRA - ESMS Global LTD, formerly part of the Guy’s Poisons Unit, is a niche service provider based in central London.” Source: RevenueBase Database · checked Sep 13, 2026
11	Pharmidex	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	39 contacts →
	Partial evidence “Pharmidex is a UK-based, GLP and GCP-compliant preclinical Contract Research Organisation (CRO) founded in 2002.” Source: RevenueBase Database · checked Sep 13, 2026
12	Acaster Lloyd	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	38 contacts →
	Indirect evidence “Some questions deserve more than just answers.” Source: RevenueBase Database · checked Sep 13, 2026
13	POP Science	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	37 contacts →
	Partial evidence “We are delighted to be a part of Coronado Research.” Source: RevenueBase Database · checked Sep 13, 2026
14	Genactis LTD	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	36 contacts →
	Partial evidence “Strategic Market Research for Pharma and Biotech Experts at researching late-stage oncology, rare and life-limiting diseases, targeted and precision medicine.” Source: RevenueBase Database · checked Sep 13, 2026
15	Weatherden	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	29 contacts →
	Indirect evidence “Weatherden is a global clinical development consultancy helping biotech and pharma realize the full potential of their science and investment.” Source: RevenueBase Database · checked Sep 13, 2026
16	Research Organisation KC LTD	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	23 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 13, 2026
17	Mitsubishi Tanabe Pharma Europe Limited	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	23 contacts →
	Indirect evidence “Mitsubishi Pharma Europe Ltd was established in 2001 with headquarters based in London.” Source: RevenueBase Database · checked Sep 13, 2026
18	Simple Pharma	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	21 contacts →
	Indirect evidence “Simple Pharma is the best home for proven pharma products.” Source: RevenueBase Database · checked Sep 13, 2026
19	Cyte Global	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	18 contacts →
	Partial evidence “CYTE is an innovative, contract research organisation (CRO) specialising in cardiovascular disease.” Source: RevenueBase Database · checked Sep 13, 2026
20	Advance Regulatory Consulting	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	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 13, 2026
21	Paspigioni	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	12 contacts →
	Strong evidence “Paspigioni is a full-service contract research organisation dedicated to excellence in clinical trials of pharmaceutical, biotech, and medical devices.” Source: RevenueBase Database · checked Sep 13, 2026
22	Tcr-Solutions	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	11 contacts →
	Partial evidence “Tailored Clinical Research Solutions (TCRS) is a CRO whose founders have detailed knowledge of the clinical research landscape across Europe and the US.” Source: RevenueBase Database · checked Sep 13, 2026
23	GILES	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	11 contacts →
	Partial evidence “giles® is shaking things up in healthcare, making life easier across pharma, biotech, hospitals, clinical research, and public health.” Source: RevenueBase Database · checked Sep 13, 2026
24	Silicon Pharma	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	11 contacts →
	Partial evidence “Founded in 2010 and headquartered in London, United Kingdom, Silicon Pharma Ltd is a trusted name in the pharmaceutical industry.” Source: RevenueBase Database · checked Sep 13, 2026
25	Evimed	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	5 contacts →
	Partial evidence “Evimed is a specialist consultancy supporting pharmaceutical and biotech companies through the evidence and market access challenges that determine whether a medicine reaches…” Source: RevenueBase Database · checked Sep 13, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: pharmaceutical research outsourcing. 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 pharmaceutical research outsourcing.
Partial evidence: Its own public description names part of pharmaceutical research outsourcing, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name pharmaceutical research outsourcing. 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 118 pharmaceutical research outsourcing based in London, United Kingdom

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Pharmaceutical research outsourcing based in London, United Kingdom at a glance

As of Sep 13, 2026

46.6%Verified-email coverage

12.3%Mobile-number coverage

41.2Average contacts per company

1-10Median size (employees)

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 15.0d

1,7840–30

46131–60

1361–90

190–180

5180+

Company record updated

Median 65.0d

00–30

2,18131–60

1,92961–90

46390–180

287180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among pharmaceutical research outsourcing, so some rows will be adjacent to the category rather than pure plays. The description and 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 “pharmaceutical research outsourcing”. 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 pharmaceutical research outsourcing), 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 pharmaceutical research outsourcing, 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, 2,264 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 13, 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 pharmaceutical research outsourcing, 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 pharmaceutical research outsourcing are there based in London, United Kingdom?

RevenueBase identified 118 pharmaceutical research outsourcing 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?

Perceptive INC, headquartered in London, tops this list with the largest team on record.

Which city in the United Kingdom has the most pharmaceutical research outsourcing?

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

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,264 verified decision-maker contacts tracked across these 118 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 13, 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.