Company lists · Data refreshed September 2026

Top 25 Pharmaceutical companies oncology based in the United Kingdom

Name: Pharmaceutical companies oncology 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 64 companies tracked

RevenueBase identified 64 pharmaceutical companies oncology headquartered in the United Kingdom as of September 2026 and tracks 2,480 professional contacts across them, including 351 with verified work emails. London is the largest hub.

This list covers pharmaceutical companies oncology 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

64Companies

2,480Contacts tracked

351Verified emails

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The 25 largest pharmaceutical companies oncology based in the United Kingdom

Ranked by team size

Top 25 of 64 pharmaceutical companies oncology 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 pharmaceutical companies oncology: 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	Daiichi Sankyo UK	Partial evidence	Uxbridge, United KingdomHQ checked Sep 17, 2026	201-500	117 contacts →
	Partial evidence “Daiichi Sankyo UK is a pharmaceutical company with corporate origins in Japan.” Source: RevenueBase Database · checked Sep 17, 2026
2	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
3	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
4	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
5	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
6	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
7	Medac Pharma UK	Strong evidence	Stirling, United KingdomHQ checked Sep 17, 2026	11-50	40 contacts →
	Strong 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
8	Seacross Pharmaceuticals LTD	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	1,001-5,000	30 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
9	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
10	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
11	Dark Blue Therapeutics	Indirect evidence	Oxford, United KingdomHQ checked Sep 17, 2026	11-50	18 contacts →
	Indirect evidence “Pioneering the next generation of precision medicines to deliver a portfolio of transformative cancer therapies.” Source: RevenueBase Database · checked Sep 17, 2026
12	Cumulus Oncology	Partial evidence	Edinburgh, United KingdomHQ checked Sep 17, 2026	1-10	16 contacts →
	Partial evidence “Cumulus Oncology is developing anti-cancer therapies for clinical settings in areas of high unmet need, with the aim of developing improved outcomes for cancer patients.” Source: RevenueBase Database · checked Sep 17, 2026
13	Guy's Cancer Academy	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	13 contacts →
	Indirect evidence “Guy's Cancer Academy is committed to being a world leader in transforming cancer care through innovative education, improving outcomes for everyone affected by cancer.” Source: RevenueBase Database · checked Sep 17, 2026
14	Cv6 Therapeutics	Partial evidence	Belfast, United KingdomHQ checked Sep 17, 2026	1-10	11 contacts →
	Partial evidence “Advancing a First in Class Oncology Therapy in Phase 1a Clinical Trials with a Pipeline for Inflammatory Diseases” Source: RevenueBase Database · checked Sep 17, 2026
15	Vasodynamics LTD	Partial evidence	Stevenage, United KingdomHQ checked Sep 17, 2026	1-10	10 contacts →
	Partial evidence “Vaso Dynamics is a clinical stage biotech and pharmaceutical development company based in Stevenage and London, UK, focusing on developing innovative pharmaceutical products for…” Source: RevenueBase Database · checked Sep 17, 2026
16	Celex Oncology Innovations LTD	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	1-10	9 contacts →
	Indirect evidence “Celex is a leading biotechnology company focused on the research and development of cutting-edge cancer treatments.” Source: RevenueBase Database · checked Sep 17, 2026
17	Biovantic Pharma	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	8 contacts →
	Partial evidence “BioVantic is a global, privately owned pharmaceutical company focused on developing, manufacturing and selling generic, brand, over-the counter (OTC) and biosimilar products for…” Source: RevenueBase Database · checked Sep 17, 2026
18	MGC Pharmaceuticals LTD	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	8 contacts →
	Partial evidence “MGC Pharmaceuticals Limited ("MGC")(MXC: LSE, ASX) is a next-generation Pharma licensed company at the forefront of the emerging global plant-inspired pharmaceutical market.” Source: RevenueBase Database · checked Sep 17, 2026
19	Oncacare	Indirect evidence	London, United KingdomHQ checked Sep 17, 2026	51-200	7 contacts →
	Indirect evidence “Oncacare is passionate about transforming cancer research to advance new treatments.” Source: RevenueBase Database · checked Sep 17, 2026
20	Karma Oncology	Partial evidence	East Kilbride, United KingdomHQ checked Sep 17, 2026	11-50	6 contacts →
	Partial evidence “Karma Oncology is an oncology specialized, well-established unique clinical development company which was incorporated in 2012.” Source: RevenueBase Database · checked Sep 17, 2026
21	Sentinel Oncology Limited	Partial evidence	Cambridge, United KingdomHQ checked Sep 17, 2026	1-10	6 contacts →
	Partial evidence “Founded in 2005 in Cambridge UK, Sentinel Oncology is dedicated to the development and commercialization of new therapeutics Our core strength is the development of highly…” Source: RevenueBase Database · checked Sep 17, 2026
22	Inaphaea Biolabs	Strong evidence	Nottingham, United KingdomHQ checked Sep 17, 2026	1-10	5 contacts →
	Strong evidence “Inaphaea BioLabs is a pharmaceutical services company, based in Nottingham (UK), offering cell-based assays specialising in oncology and women's health.” Source: RevenueBase Database · checked Sep 17, 2026
23	Cyclacel Limited	Partial evidence	Dundee, United KingdomHQ checked Sep 17, 2026	11-50	4 contacts →
	Partial evidence “Cyclacel Limited is a pharmaceuticals company based out of 46-48 E Smithfield, London, United Kingdom.” Source: RevenueBase Database · checked Sep 17, 2026
24	Roquefort Therapeutics PLC	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	1-10	3 contacts →
	Partial evidence “Roquefort Therapeutics is a LSE Main Market listed biotech company developing first in class drugs in the high value and high growth oncology segment prior to partnering or…” Source: RevenueBase Database · checked Sep 17, 2026
25	Ailse Oncology LTD	Strong evidence	Cheshire, United KingdomHQ checked Sep 17, 2026	1-10	2 contacts →
	Strong evidence “Ailse Oncology Ltd has translational and clinical development expertise across a wide range of solid tumours and haematological malignancies and works with the pharmaceutical/…” 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: pharmaceutical companies oncology. 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 companies oncology.
Partial evidence: Its own public description names part of pharmaceutical companies oncology, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name pharmaceutical companies oncology. 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 64 pharmaceutical companies oncology based in the United Kingdom

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Pharmaceutical companies oncology based in the United Kingdom at a glance

As of Sep 17, 2026

14.2%Verified-email coverage

38.8Average contacts per company

11-50Median size (employees)

31.2%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 64 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 pharmaceutical companies oncology, 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 “pharmaceutical companies oncology”. 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 companies oncology), 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 companies oncology, 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, 351 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.

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

RevenueBase identified 64 pharmaceutical companies oncology 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?

Daiichi Sankyo UK, headquartered in Uxbridge, tops this list with the largest team on record.

Which city has the most pharmaceutical companies oncology?

London leads with 20 headquartered companies, followed by Cambridge (3) and Edinburgh (3).

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 351 verified decision-maker contacts tracked across these 64 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.