Company lists · Data refreshed September 2026

Top 25 Biotech drug development companies based in the United Kingdom

Name: Biotech drug development companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 250 companies tracked

RevenueBase identified 250 biotech drug development companies headquartered in the United Kingdom as of September 2026 and tracks 4,489 professional contacts across them, including 1,565 with verified work emails. London is the largest hub.

This list covers biotech drug development companies 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

250Companies

4,489Contacts tracked

1,565Verified emails

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The 25 largest biotech drug development companies based in the United Kingdom

Ranked by team size

Top 25 of 250 biotech drug development companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to biotech drug development companies: 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	Bicycle Therapeutics	Indirect evidence	Cambridge, United KingdomHQ checked Sep 16, 2026	201-500	342 contacts →
	Indirect evidence “Bicycle Therapeutics (NASDAQ: BCYC) is a clinical-stage biopharmaceutical company that is harnessing the power of bicyclic peptides and leveraging Nobel Prize-winning science to…” Source: RevenueBase Database · checked Sep 16, 2026
2	Vernalis	Strong evidence	Cambridge, United KingdomHQ checked Sep 16, 2026	51-200	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, 2026
3	Bristol Myers Squibb UK & Ireland	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	1,001-5,000	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, 2026
4	Relation	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	105 contacts →
	Partial evidence “We are an end-to-end biotech developing transformational medicines, with technology at our core.” Source: RevenueBase Database · checked Sep 16, 2026
5	Arcinova	Partial evidence	Alnwick, United KingdomHQ checked Sep 16, 2026	51-200	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, 2026
6	Domainex	Strong evidence	Saffron Walden, United KingdomHQ checked Sep 16, 2026	51-200	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, 2026
7	Bioascent	Partial evidence	Newhouse, United KingdomHQ checked Sep 16, 2026	51-200	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, 2026
8	Labgenius Therapeutics	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	63 contacts →
	Partial evidence “LabGenius Therapeutics ("LabGenius") is a drug discovery company pioneering the discovery of next-generation therapeutic antibodies.” Source: RevenueBase Database · checked Sep 16, 2026
9	HEALX	Partial evidence	Cambridge, United KingdomHQ checked Sep 16, 2026	51-200	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, 2026
10	Oxford Biotherapeutics	Indirect evidence	Oxford, United KingdomHQ checked Sep 16, 2026	11-50	60 contacts →
	Indirect evidence “Oxford BioTherapeutics (OBT) is a clinical stage oncology company based in Oxford, UK; San Jose, CA and Morristown, NJ, USA, with a pipeline of first-in-class immuno-oncology (IO)…” Source: RevenueBase Database · checked Sep 16, 2026
11	Amphista Therapeutics Limited	Partial evidence	Cambridge, United KingdomHQ checked Sep 16, 2026	51-200	58 contacts →
	Partial evidence “At Amphista Therapeutics we are developing drugs to bring life-changing medicines to patients.” Source: RevenueBase Database · checked Sep 16, 2026
12	Evox Therapeutics LTD	Indirect evidence	Oxford, United KingdomHQ checked Sep 16, 2026	51-200	57 contacts →
	Indirect evidence “Evox Therapeutics is harnessing and engineering the natural trafficking capabilities of extracellular vesicles to develop an entirely novel class of biotherapeutics.” Source: RevenueBase Database · checked Sep 16, 2026
13	Alchemab Therapeutics LTD	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	54 contacts →
	Partial evidence “Alchemab is harnessing the naturally protective power of patient antibodies to keep people free of hard-to-treat disease in a unique and transformative approach to drug discovery…” Source: RevenueBase Database · checked Sep 16, 2026
14	Sitryx	Indirect evidence	Oxford, United KingdomHQ checked Sep 16, 2026	11-50	51 contacts →
	Indirect evidence “Sitryx is a biopharmaceutical company focused on regulating cell metabolism to develop first-in-class disease modifying therapeutics in immuno-oncology and immuno-inflammation.” Source: RevenueBase Database · checked Sep 16, 2026
15	Nucleome Therapeutics	Indirect evidence	Oxford, United KingdomHQ checked Sep 16, 2026	11-50	51 contacts →
	Indirect evidence “Nucleome was founded in 2019.” Source: RevenueBase Database · checked Sep 16, 2026
16	Cellcentric	Partial evidence	Cambridge, United KingdomHQ checked Sep 16, 2026	11-50	47 contacts →
	Partial evidence “Inobrodib is the first small molecule drug in the clinic targeting twin proteins p300 and CBP.” Source: RevenueBase Database · checked Sep 16, 2026
17	Curve Therapeutics	Indirect evidence	Southampton, United KingdomHQ checked Sep 16, 2026	11-50	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, 2026
18	Mereo Biopharma	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	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, 2026
19	Phoremost LTD	Partial evidence	Pampisford, United KingdomHQ checked Sep 16, 2026	11-50	39 contacts →
	Partial evidence “PhoreMost is a new-model drug discovery company based in Cambridge, UK.” Source: RevenueBase Database · checked Sep 16, 2026
20	Reneuron Group Limited	Strong evidence	Bridgend, United KingdomHQ checked Sep 16, 2026	n/a	35 contacts →
	Strong evidence “ReNeuron is a biotechnology company harnessing the natural biology of exosomes to develop next-generation drug delivery systems.” Source: RevenueBase Database · checked Sep 16, 2026
21	Infinitopes	Indirect evidence	Oxford, United KingdomHQ checked Sep 16, 2026	11-50	33 contacts →
	Indirect evidence “Infinitopes is a pioneer in precision immunomics medicines.” Source: RevenueBase Database · checked Sep 16, 2026
22	Charnwood Discovery, Part Of Concept Life Sciences	Indirect evidence	Chapel-en-le-frith, United KingdomHQ checked Sep 16, 2026	51-200	33 contacts →
	Indirect evidence “Charnwood Discovery is part of Concept Life Sciences following an acquisition in November 2024.” Source: RevenueBase Database · checked Sep 16, 2026
23	C4x Discovery LTD	Partial evidence	Manchester, United KingdomHQ checked Sep 16, 2026	11-50	32 contacts →
	Partial evidence “C4XD is a pioneering Drug Discovery company, combining scientific expertise with cutting-edge technologies to efficiently deliver world‑leading medicines.” Source: RevenueBase Database · checked Sep 16, 2026
24	Orbit Discovery	Partial evidence	Oxford, United KingdomHQ checked Sep 16, 2026	11-50	30 contacts →
	Partial evidence “Orbit develop and apply innovative drug discovery platforms defined by a unique peptide display engine that deliver novel, functional, biologically relevant peptide therapeutic…” Source: RevenueBase Database · checked Sep 16, 2026
25	Fusion Antibodies	Partial evidence	Belfast, United KingdomHQ checked Sep 16, 2026	11-50	29 contacts →
	Partial evidence “Since 2001, Fusion Antibodies has been dedicated to the discovery and early development of antibodies to help bring about a positive change in the healthcare industry.” Source: RevenueBase Database · checked Sep 16, 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: biotech drug development companies. 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 biotech drug development companies.
Partial evidence: Its own public description names part of biotech drug development companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name biotech drug development companies. 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 250 biotech drug development companies based in the United Kingdom

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Biotech drug development companies based in the United Kingdom at a glance

As of Sep 16, 2026

34.9%Verified-email coverage

18.0Average contacts per company

1-10Median size (employees)

27.2%Largest-city concentration · London

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

137

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 250 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 biotech drug development companies, 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 “biotech drug development companies”. 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 biotech drug development companies), 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 biotech drug development companies, 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, 1,565 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.

Biotech drug development companies by metro

Biotech drug development companies in London68
Biotech drug development companies in Cambridge31

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 biotech drug development companies, 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 biotech drug development companies are there based in the United Kingdom?

RevenueBase identified 250 biotech drug development companies 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?

Bicycle Therapeutics, headquartered in Cambridge, tops this list with the largest team on record.

Which city has the most biotech drug development companies?

London leads with 68 headquartered companies, followed by Cambridge (31) and Oxford (22).

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 1,565 verified decision-maker contacts tracked across these 250 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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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.