Company lists · Data refreshed September 2026

Top 25 Biotherapeutics companies based in the United Kingdom

Name: Biotherapeutics 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 7, 2026 394 companies tracked

RevenueBase identified 394 biotherapeutics companies headquartered in the United Kingdom as of September 2026 and tracks 8,713 professional contacts across them, including 4,645 with verified work emails and 1,042 with mobile numbers. London is the largest hub.

This list covers biotherapeutics 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 7, 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 7, 2026 86% judged on-target in blind review

394Companies

8,713Contacts tracked

4,645Verified emails

1,042Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest biotherapeutics companies based in the United Kingdom

Ranked by team size

Top 25 of 394 biotherapeutics companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 7, 2026. RevenueBase Smart Search rates how each company's information relates to biotherapeutics 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	OXB	Indirect evidence	Oxford, United KingdomHQ checked Sep 7, 2026	501-1,000	861 contacts →
	“OXB (LSE: OXB) is a global quality and innovation-led contract development and manufacturing organisation (CDMO) in cell and gene therapy with a mission to enable its clients to…” Source: company website · checked Sep 7, 2026
2	Advanz Pharma	Indirect evidence	London, United KingdomHQ checked Sep 7, 2026	501-1,000	709 contacts →
	“Partner of choice in specialty, hospital, and rare disease medicines ADVANZ PHARMA is a global pharmaceutical company with the purpose to improve patients’ lives by providing the…” Source: company website · checked Sep 7, 2026
3	Immunocore	Indirect evidence	Abingdon, United KingdomHQ checked Sep 7, 2026	201-500	585 contacts →
	“Immunocore is a leading T cell receptor (TCR) biotechnology company working to create first-in-class biological therapies to address unmet patient needs in oncology as well as…” Source: company website · checked Sep 7, 2026
4	Roslinct	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 7, 2026	201-500	437 contacts →
	“RoslinCT is a leading global contract development and manufacturing services organization (CDMO) focused on Advanced Cell Therapies.” Source: company website · checked Sep 7, 2026
5	Bicycle Therapeutics	Indirect evidence	Cambridge, United KingdomHQ checked Sep 7, 2026	201-500	342 contacts →
	“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: company website · checked Sep 7, 2026
6	Bristol Myers Squibb UK & Ireland	Indirect evidence	London, United KingdomHQ checked Sep 7, 2026	1,001-5,000	317 contacts →
	“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: company website · checked Sep 7, 2026
7	Adaptimmune	Indirect evidence	Abingdon, United KingdomHQ checked Sep 7, 2026	201-500	313 contacts →
	“Adaptimmune is a fully integrated cell therapy company, designed and built from the ground up with four U.K- and U.S-based biotechnology hub locations.” Source: company website · checked Sep 7, 2026
8	Fresenius Kabi UK	Indirect evidence	Runcorn, United KingdomHQ checked Sep 7, 2026	501-1,000	181 contacts →
	“Fresenius Kabi is a global healthcare company specialising in lifesaving medicines and technologies for infusion, transfusion and clinical nutrition.” Source: company website · checked Sep 7, 2026
9	Quell Therapeutics	Indirect evidence	London, United KingdomHQ checked Sep 7, 2026	51-200	158 contacts →
	“An exciting new cell therapy immunology biotech committed to transforming patient's lives in solid organ transplantation and auto-immune conditions.” Source: company website · checked Sep 7, 2026
10	Astrea Bioseparations	Indirect evidence	Comberton, United KingdomHQ checked Sep 7, 2026	51-200	119 contacts →
	“Astrea Bioseparations, a Biotage company, is a leading provider of chromatography and bioseparation solutions for the life sciences industry.” Source: company website · checked Sep 7, 2026
11	Roukenbio	Indirect evidence	Motherwell, United KingdomHQ checked Sep 7, 2026	51-200	91 contacts →
	“RoukenBio – CRO redefined.” Source: company website · checked Sep 7, 2026
12	ORI Biotech	Indirect evidence	London, United KingdomHQ checked Sep 7, 2026	11-50	88 contacts →
	“Ori Biotech is a London- and Philadelphia-based leader in CGT manufacturing technology that has developed a proprietary, bespoke and flexible manufacturing platform, which enables…” Source: company website · checked Sep 7, 2026
13	Advent Bioservices	Indirect evidence	Sawston, United KingdomHQ checked Sep 7, 2026	51-200	86 contacts →
	“Advent Bioservices began activity as a cell therapy contract development & manufacturing organisation (CDMO) in 2016.” Source: company website · checked Sep 7, 2026
14	Biocatalysts LTD	Indirect evidence	Cardiff, United KingdomHQ checked Sep 7, 2026	51-200	85 contacts →
	“Biocatalysts is a biotechnology company producing speciality enzymes at commercial scales for a variety of industries.” Source: company website · checked Sep 7, 2026
15	Porton Biopharma LTD	Indirect evidence	Salisbury, United KingdomHQ checked Sep 7, 2026	51-200	82 contacts →
	“Porton Biopharma Limited (PBL) is a UK based company experienced in developing and manufacturing biopharmaceutical therapeutics and vaccines.” Source: company website · checked Sep 7, 2026
16	Exmoor Pharma	Indirect evidence	Bristol, United KingdomHQ checked Sep 7, 2026	51-200	75 contacts →
	“eXmoor Pharma is the only integrated UK cell and gene therapy CDMO with consultancy expertise embedded at every stage of your journey, from early-phase strategy through GMP…” Source: company website · checked Sep 7, 2026
17	Barinthus Biotherapeutics	Strong evidence	Harwell, United KingdomHQ checked Sep 7, 2026	51-200	73 contacts →
	“Barinthus Biotherapeutics is a clinical-stage biopharmaceutical company developing novel T cell immunotherapeutic candidates designed to guide the immune system to overcome…” Source: company website · checked Sep 7, 2026
18	Enara BIO	Indirect evidence	Oxford, United KingdomHQ checked Sep 7, 2026	51-200	64 contacts →
	“Enara Bio is shining a light on Dark Antigen and T-cell biology to develop cancer immunotherapies designed to improve treatment outcomes for broad populations of cancer patients…” Source: company website · checked Sep 7, 2026
19	TMC Pharma Services LTD	Indirect evidence	Hartley Wintney, United KingdomHQ checked Sep 7, 2026	501-1,000	63 contacts →
	“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: company website · checked Sep 7, 2026
20	Labgenius Therapeutics	Indirect evidence	London, United KingdomHQ checked Sep 7, 2026	51-200	63 contacts →
	“LabGenius Therapeutics ("LabGenius") is a drug discovery company pioneering the discovery of next-generation therapeutic antibodies.” Source: company website · checked Sep 7, 2026
21	T-Therapeutics LTD	Indirect evidence	Cambridge, United KingdomHQ checked Sep 7, 2026	51-200	61 contacts →
	“T-Therapeutics is a next-generation TCR company, spun out from the University of Cambridge, deeply rooted in world-leading academic science.” Source: company website · checked Sep 7, 2026
22	Bioindustry Association BIA	Indirect evidence	London, United KingdomHQ checked Sep 7, 2026	11-50	61 contacts →
	“The BioIndustry Association (BIA) is the voice of the innovative life sciences and biotech industry, enabling and connecting the UK ecosystem so that businesses can start, grow…” Source: company website · checked Sep 7, 2026
23	Oxford Biotherapeutics	Strong evidence	Oxford, United KingdomHQ checked Sep 7, 2026	11-50	60 contacts →
	“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: company website · checked Sep 7, 2026
24	Galen LTD	Indirect evidence	Belfast, United KingdomHQ checked Sep 7, 2026	11-50	57 contacts →
	“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: company website · checked Sep 7, 2026
25	Evox Therapeutics LTD	Strong evidence	Oxford, United KingdomHQ checked Sep 7, 2026	51-200	57 contacts →
	“Evox Therapeutics is harnessing and engineering the natural trafficking capabilities of extracellular vesicles to develop an entirely novel class of biotherapeutics.” Source: company website · checked Sep 7, 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: biotherapeutics 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 biotherapeutics companies.
Partial evidence: Its own public description names part of biotherapeutics companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name biotherapeutics 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 394 biotherapeutics companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 4,645 reachable decision-makers.

Free signup · no credit card

View the full list →

Biotherapeutics companies based in the United Kingdom at a glance

As of Sep 7, 2026

53.3%Verified-email coverage

12.0%Mobile-number coverage

22.1Average contacts per company

1-10Median size (employees)

29.7%Largest-city concentration · London

Sep 7, 2026Page data refreshed

Companies by employee count

1-10

219

11-50

105

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

4,3390–30

28531–60

161–90

190–180

19180+

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 biotherapeutics 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 “biotherapeutics 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 biotherapeutics 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 biotherapeutics 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, 4,645 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 7, 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.

Biotherapeutics companies by metro

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 biotherapeutics 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 biotherapeutics companies are there based in the United Kingdom?

RevenueBase identified 394 biotherapeutics 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?

OXB, headquartered in Oxford, tops this list with the largest team on record.

Which city has the most biotherapeutics companies?

London leads with 117 headquartered companies, followed by Cambridge (40) and Oxford (25).

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 4,645 verified decision-maker contacts tracked across these 394 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 7, 2026.

Ready to reach these companies? Verified emails and direct dials for all 394 biotherapeutics companies based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Biotherapeutics companies by geography

Browse the directory

Browse: Companies home · All United Kingdom lists · All Biotherapeutics companies lists · New lists

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.