Company lists · Data refreshed September 2026

Top 25 Oncology biotech companies based in the United Kingdom

Name: Oncology biotech 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 17, 2026 133 companies tracked

RevenueBase identified 133 oncology biotech companies headquartered in the United Kingdom as of September 2026 and tracks 2,267 professional contacts across them, including 943 with verified work emails. London is the largest hub.

This list covers oncology biotech 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 17, 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 17, 2026 86% judged on-target in blind review

133Companies

2,267Contacts tracked

943Verified emails

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The 25 largest oncology biotech companies based in the United Kingdom

Ranked by team size

Top 25 of 133 oncology biotech companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to oncology biotech 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	Adaptimmune	Partial evidence	Abingdon, United KingdomHQ checked Sep 17, 2026	201-500	313 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 17, 2026
2	Quell Therapeutics	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	158 contacts →
	Partial evidence “An exciting new cell therapy immunology biotech committed to transforming patient's lives in solid organ transplantation and auto-immune conditions.” Source: RevenueBase Database · checked Sep 17, 2026
3	ANGLE	Partial evidence	Surrey Research Park, United KingdomHQ checked Sep 17, 2026	51-200	104 contacts →
	Partial evidence “ANGLE is a world-leading liquid biopsy company with innovative circulating tumour cell (CTC) diagnostic solutions for use in research, drug development and clinical oncology using…” Source: RevenueBase Database · checked Sep 17, 2026
4	Eusa Pharma	Indirect evidence	Hemel Hempstead, United KingdomHQ checked Sep 17, 2026	201-500	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 17, 2026
5	Enara BIO	Indirect evidence	Oxford, United KingdomHQ checked Sep 17, 2026	51-200	64 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 17, 2026
6	Oxford Biotherapeutics	Partial evidence	Oxford, United KingdomHQ checked Sep 17, 2026	11-50	60 contacts →
	Partial 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 17, 2026
7	Leaders In Oncology Care LOC	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	53 contacts →
	Indirect evidence “LOC is a network of internationally renowned cancer treatment centers providing bespoke, personalised treatment and care for people with cancer.” Source: RevenueBase Database · checked Sep 17, 2026
8	Scancell	Partial evidence	Oxford, United KingdomHQ checked Sep 17, 2026	51-200	52 contacts →
	Partial evidence “Scancell is a clinical stage immunotherapy biotech company developing treatments for significant unmet needs in cancer.” Source: RevenueBase Database · checked Sep 17, 2026
9	Sitryx	Partial evidence	Oxford, United KingdomHQ checked Sep 17, 2026	11-50	51 contacts →
	Partial 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 17, 2026
10	Oxford Biodynamics PLC	Partial evidence	Oxford, United KingdomHQ checked Sep 17, 2026	51-200	47 contacts →
	Partial evidence “Oxford BioDynamics (OBD) is a global biotech company advancing personalized healthcare by developing and commercializing precision medicine tests for life-changing diseases.” Source: RevenueBase Database · checked Sep 17, 2026
11	Avacta Therapeutics	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	46 contacts →
	Partial evidence “Avacta is a clinical stage biotechnology company expanding the reach of highly potent cancer therapies with the pre\|CISION® platform.” Source: RevenueBase Database · checked Sep 17, 2026
12	Laverock Therapeutics	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	42 contacts →
	Indirect evidence “Next generation programmable cell therapies” Source: RevenueBase Database · checked Sep 17, 2026
13	Ellipses Pharma	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	40 contacts →
	Indirect evidence “Ellipses Pharma is an international drug development company, focused exclusively on the advancement of innovative cancer treatments through the clinic.” Source: RevenueBase Database · checked Sep 17, 2026
14	Curve Therapeutics	Indirect evidence	Southampton, United KingdomHQ checked Sep 17, 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 17, 2026
15	Mereo Biopharma	Indirect evidence	London, United KingdomHQ checked Sep 17, 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 17, 2026
16	Medac Pharma UK	Partial evidence	Stirling, United KingdomHQ checked Sep 17, 2026	11-50	40 contacts →
	Partial evidence “medac Pharma is a privately owned, pharmaceutical company specialising in the development, diagnosis and treatment of diseases within the key areas of oncology, urology…” Source: RevenueBase Database · checked Sep 17, 2026
17	Phoremost LTD	Indirect evidence	Pampisford, United KingdomHQ checked Sep 17, 2026	11-50	39 contacts →
	Indirect evidence “PhoreMost is a new-model drug discovery company based in Cambridge, UK.” Source: RevenueBase Database · checked Sep 17, 2026
18	Dxcover	Indirect evidence	Glasgow, United KingdomHQ checked Sep 17, 2026	11-50	34 contacts →
	Indirect evidence “Dxcover is a clinical stage liquid biopsy company developing tests for the early detection of multiple cancers, when treatment has a better chance to impact outcomes.” Source: RevenueBase Database · checked Sep 17, 2026
19	Infinitopes	Indirect evidence	Oxford, United KingdomHQ checked Sep 17, 2026	11-50	33 contacts →
	Indirect evidence “Infinitopes is a pioneer in precision immunomics medicines.” Source: RevenueBase Database · checked Sep 17, 2026
20	F-Star Therapeutics	Partial evidence	Cambridge, United KingdomHQ checked Sep 17, 2026	11-50	26 contacts →
	Partial evidence “F-star is a private biotech, based in Cambridge UK, focused on using our world-leading, innovative bispecific antibody technology that is clinically validated, patent protected…” Source: RevenueBase Database · checked Sep 17, 2026
21	Theolytics	Partial evidence	Oxford, United KingdomHQ checked Sep 17, 2026	11-50	25 contacts →
	Partial evidence “Theolytics is an Oxford-based, clinical-stage biotechnology company developing differentiated intravenous oncolytic immunotherapies for solid tumours.” Source: RevenueBase Database · checked Sep 17, 2026
22	Pheon Therapeutics	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	25 contacts →
	Indirect evidence “Pheon Therapeutics is leveraging two decades of ADC experience to build a novel pipeline of next generation ADCs which offer the potential to treat solid tumors and liquid cancers…” Source: RevenueBase Database · checked Sep 17, 2026
23	Mosaic TX	Partial evidence	Babraham, United KingdomHQ checked Sep 17, 2026	11-50	23 contacts →
	Partial evidence “ABOUT US Mosaic Therapeutics is an oncology therapeutics company delivering precision medicines for patient groups with few targeted treatment options today.” Source: RevenueBase Database · checked Sep 17, 2026
24	Nucana PLC	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 17, 2026	11-50	23 contacts →
	Indirect evidence “NuCana is a clinical-stage biopharmaceutical company focused on significantly improving treatment outcomes for patients with cancer by applying our phosphoramidate chemistry…” Source: RevenueBase Database · checked Sep 17, 2026
25	Yellowstone Biosciences	Indirect evidence	Oxford, United KingdomHQ checked Sep 17, 2026	11-50	22 contacts →
	Indirect evidence “Yellowstone aims to unlock a new class of therapeutically targetable frequently expressed antigens with potential to significantly transform patient lives.” Source: RevenueBase Database · checked Sep 17, 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: oncology biotech 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 oncology biotech companies.
Partial evidence: Its own public description names part of oncology biotech companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oncology biotech 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 133 oncology biotech companies based in the United Kingdom

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Oncology biotech companies based in the United Kingdom at a glance

As of Sep 17, 2026

41.6%Verified-email coverage

17.0Average contacts per company

1-10Median size (employees)

31.6%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 133 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 oncology biotech 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 “oncology biotech 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 oncology biotech 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 oncology biotech 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, 943 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 17, 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.

Oncology biotech companies by metro

Oncology biotech companies in London42

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 oncology biotech 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 oncology biotech companies are there based in the United Kingdom?

RevenueBase identified 133 oncology biotech 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?

Adaptimmune, headquartered in Abingdon, tops this list with the largest team on record.

Which city has the most oncology biotech companies?

London leads with 42 headquartered companies, followed by Oxford (21) and Cambridge (12).

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 943 verified decision-maker contacts tracked across these 133 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 17, 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.