Company lists · Data refreshed September 2026
Top 25 Drug development biotechnology firms based in the United Kingdom
RevenueBase identified 287 drug development biotechnology firms headquartered in the United Kingdom as of September 2026 and tracks 9,659 professional contacts across them, including 2,239 with verified work emails. London is the largest hub.
This list covers drug development biotechnology firms headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest drug development biotechnology firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 521 contacts → | ||||
Partial evidence “Founded in 2005, o2h discovery is a Contract Research Organisation which has an integrated drug discovery platform operating from our state-of-the-art research centre in India and…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 330 contacts → | ||||
Strong evidence “We develop and apply fragment and structure-based methods to solve problems in drug discovery, and have generated cell active lead compounds and development candidates against…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 317 contacts → | ||||
Indirect evidence “Bristol Myers Squibb is a differentiated company, led by our revolutionary BioPharma strategy that combines the reach and resources of a major pharmaceutical firm with the…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 300 contacts → | ||||
Indirect evidence “Pharmanovia is an innovative specialty pharmaceutical company with a clear purpose: helping patients lead fuller lives today and tomorrow.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 218 contacts → | ||||
Indirect evidence “GW Pharmaceuticals is now part of Jazz Pharmaceuticals.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 214 contacts → | ||||
Strong evidence “hVIVO plc (Ticker: HVO) is a science‑led early‑phase drug development company purpose‑built to meet the growing complexity of modern clinical research.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 208 contacts → | ||||
Indirect evidence “Napp Pharmaceuticals is a member of the Mundipharma network of independent associated companies.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 176 contacts → | ||||
Indirect evidence “Aspire Pharma is an innovative, privately owned British pharmaceutical company established in 2009.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 117 contacts → | ||||
Indirect evidence “Daiichi Sankyo UK is a pharmaceutical company with corporate origins in Japan.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 114 contacts → | ||||
Partial evidence “CatSci Ltd is an award-winning innovation partner, dedicated to breaking down the silos in small molecules, TACS, glues and oligonucleotides CMC development to accelerate the…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 111 contacts → | ||||
Indirect evidence “Novumgen was founded by a group of experienced pharmaceutical professionals with the goal of developing and producing innovative, high quality medicines.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 110 contacts → | ||||
Partial evidence “Upperton Pharma Solutions is a specialist CDMO (contract development and manufacturing organisation) providing formulation and dosage form development and clinical trial…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 102 contacts → | ||||
Partial evidence “Arcinova, A Quotient Sciences Company, is dedicated to providing innovative contract research, development, and manufacturing services.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 97 contacts → | ||||
Strong evidence “Domainex is a fully integrated drug discovery service company based near Cambridge, UK serving pharmaceutical, biotechnology, academic and patient foundations globally.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 84 contacts → | ||||
Partial evidence “Founded in 2013, BioAscent is a leading provider of integrated drug discovery services based at the former Organon / MSD R&D site in Newhouse, Scotland, UK.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 70 contacts → | ||||
Indirect evidence “We are committed to transforming the lives of people affected by cancer or rare disease, globally.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 63 contacts → | ||||
Strong evidence “TMC is a global pharma services company, partnering with small to mid-sized biotech and pharma companies to accelerate drug development timelines and maximise value across the…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 60 contacts → | ||||
Strong evidence “Seda Pharmaceutical Development Services provide Integrated Pharmaceutical Development and Clinical Pharmacology services and consultancy to the Pharma and Biotechnology…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 60 contacts → | ||||
Partial evidence “Healx is a mission-driven technology company pioneering the next generation of drug discovery in order to bring novel, effective treatments to rare disease patients around the…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 57 contacts → | ||||
Indirect evidence “At Galen, we have purpose and passion in everything we do and encourage our people to dare to be extraordinary so we can benefit the health of all generations.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 53 contacts → | ||||
Indirect evidence “Optibrium provides elegant software solutions for small molecule design, optimisation and data analysis.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 51 contacts → | ||||
Indirect evidence “Nucleome was founded in 2019.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 46 contacts → | ||||
Strong evidence “BDD combines drug delivery expertise and clinical capabilities to accelerate product development pipelines, enable life cycle management and create new value-added products.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 40 contacts → | ||||
Indirect evidence “Our mission is to transform the discovery of first-in-class small molecule therapeutics by broadening the landscape of disease targets that can be drugged.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 40 contacts → | ||||
Indirect evidence “Welcome to Mereo BioPharma, we are an agile biopharmaceutical company, focused on finding and bringing to market therapies that will improve the lives of people living with a rare…” Source: RevenueBase Database · checked Sep 16, 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: drug development biotechnology 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 drug development biotechnology firms.
- Partial evidence
- Its own public description names part of drug development biotechnology firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name drug development biotechnology 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 287 drug development biotechnology firms based in the United Kingdom
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Drug development biotechnology firms based in the United Kingdom at a glance
As of Sep 16, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 287 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 drug development biotechnology 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 the United Kingdom whose own description of what they do matches “drug development biotechnology 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 drug development biotechnology 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 drug development biotechnology firms, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 2,239 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Drug development biotechnology firms by metro
- Drug development biotechnology firms in London80
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 drug development biotechnology 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 drug development biotechnology firms are there based in the United Kingdom?
RevenueBase identified 287 drug development biotechnology firms headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
O2h Discovery, headquartered in Cambridge, tops this list with the largest team on record.
Which city has the most drug development biotechnology firms?
London leads with 80 headquartered companies, followed by Cambridge (24) and Oxford (11).
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 2,239 verified decision-maker contacts tracked across these 287 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.
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Drug development biotechnology firms by geography
- Drug development biotechnology firms based in Ahmedabad, India
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- Drug development biotechnology firms based in Mumbai, India
- Drug development biotechnology firms based in Pune, India
- Drug development biotechnology firms based in Boston, United States
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- Drug development biotechnology firms based in South San Francisco, United States
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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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