Company lists · Data refreshed September 2026

Top 25 Contract manufacturing organizations biotech based in the United Kingdom

Name: Contract manufacturing organizations biotech 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 145 companies tracked

RevenueBase identified 145 contract manufacturing organizations biotech headquartered in the United Kingdom as of September 2026 and tracks 10,630 professional contacts across them, including 6,304 with verified work emails. London is the largest hub.

This list covers contract manufacturing organizations biotech 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

145Companies

10,630Contacts tracked

6,304Verified emails

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The 25 largest contract manufacturing organizations biotech based in the United Kingdom

Ranked by team size

Top 25 of 145 contract manufacturing organizations biotech 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 contract manufacturing organizations biotech: 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	Almac Group	Indirect evidence	Craigavon, United KingdomHQ checked Sep 16, 2026	5,001-10,000	4,577 contacts →
	Indirect evidence “Partnering to Advance Human Health A unique culture delivering exceptional solutions: Almac is a financially secure, privately owned organisation with 7,800+ employees globally.” Source: RevenueBase Database · checked Sep 16, 2026
2	OXB	Strong evidence	Oxford, United KingdomHQ checked Sep 16, 2026	501-1,000	861 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 16, 2026
3	Roslinct	Strong evidence	Edinburgh, United KingdomHQ checked Sep 16, 2026	201-500	437 contacts →
	Strong evidence “RoslinCT is a leading global contract development and manufacturing services organization (CDMO) focused on Advanced Cell Therapies.” Source: RevenueBase Database · checked Sep 16, 2026
4	Concept Life Sciences	Strong evidence	High Peak, United KingdomHQ checked Sep 16, 2026	201-500	209 contacts →
	Strong evidence “Concept Life Sciences is a knowledge-based, science-led and customer-focused contract research and manufacturing organisation with world-leading expertise in the pharmaceutical…” Source: RevenueBase Database · checked Sep 16, 2026
5	Wasdell Group	Indirect evidence	Swindon, United KingdomHQ checked Sep 16, 2026	501-1,000	192 contacts →
	Indirect evidence “The Wasdell Group provides the pharmaceutical and nutraceutical industries with solutions to a range of outsourcing requirements.” Source: RevenueBase Database · checked Sep 16, 2026
6	Touchlight	Indirect evidence	Hampton, United KingdomHQ checked Sep 16, 2026	51-200	188 contacts →
	Indirect evidence “Touchlight is a leading, innovation-driven CDMO pioneering enzymatic GMP DNA production to enable the genetic medicine revolution.” Source: RevenueBase Database · checked Sep 16, 2026
7	Aesica Pharmaceuticals LTD	Strong evidence	Hemel Hempstead, United KingdomHQ checked Sep 16, 2026	1,001-5,000	157 contacts →
	Strong evidence “Aesica is a leading pharmaceutical contract development and manufacturing organisation (CDMO) for both APIs and finished dose forms.” Source: RevenueBase Database · checked Sep 16, 2026
8	Symbiosis Pharmaceutical Services	Strong evidence	Stirling, United KingdomHQ checked Sep 16, 2026	51-200	140 contacts →
	Strong evidence “Symbiosis Pharmaceutical Services is a contract development and manufacturing organisation (CDMO) that specialises in the GMP manufacture and sterile fill/finish of vials for…” Source: RevenueBase Database · checked Sep 16, 2026
9	Catsci LTD	Indirect evidence	Wentloog, United KingdomHQ checked Sep 16, 2026	51-200	114 contacts →
	Indirect 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, 2026
10	Upperton Pharma Solutions	Strong evidence	Beeston, United KingdomHQ checked Sep 16, 2026	51-200	110 contacts →
	Strong 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, 2026
11	Custom Pharma Services	Strong evidence	Hove, United KingdomHQ checked Sep 16, 2026	51-200	104 contacts →
	Strong evidence “Custom Pharma Services is located in Brighton, UK since 1979 and is a full-service contract development and manufacturing organisation (CDMO) providing services tailored to your…” Source: RevenueBase Database · checked Sep 16, 2026
12	Torbay Pharma	Indirect evidence	Paignton, United KingdomHQ checked Sep 16, 2026	201-500	104 contacts →
	Indirect evidence “Torbay Pharma is a trusted provider of sterile injectable solutions, specializing in small and medium batch sizes for the hospital market.” Source: RevenueBase Database · checked Sep 16, 2026
13	Arcinova	Strong evidence	Alnwick, United KingdomHQ checked Sep 16, 2026	51-200	102 contacts →
	Strong evidence “Arcinova, A Quotient Sciences Company, is dedicated to providing innovative contract research, development, and manufacturing services.” Source: RevenueBase Database · checked Sep 16, 2026
14	Nova Laboratories Limited	Strong evidence	Wigston, United KingdomHQ checked Sep 16, 2026	51-200	96 contacts →
	Strong evidence “Nova Laboratories is an independent contract manufacturer, that has established a worldwide reputation, for the aseptic processing of pharmaceutical, biotechnology and medical…” Source: RevenueBase Database · checked Sep 16, 2026
15	Abingdon Health PLC	Indirect evidence	Sand Hutton York, United KingdomHQ checked Sep 16, 2026	201-500	87 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
16	Sequani	Indirect evidence	Ledbury, United KingdomHQ checked Sep 16, 2026	51-200	87 contacts →
	Indirect evidence “great people, great work, real results Sequani’s heritage spans more than 50 years when a company called Toxicol Laboratories opened for business in London.” Source: RevenueBase Database · checked Sep 16, 2026
17	Onyx Scientific	Strong evidence	Sunderland, United KingdomHQ checked Sep 16, 2026	51-200	86 contacts →
	Strong evidence “Onyx Scientific is a CDMO that helps pharmaceutical and biotech companies across the globe, accelerate candidates from discovery to manufacturing.” Source: RevenueBase Database · checked Sep 16, 2026
18	Advent Bioservices	Strong evidence	Sawston, United KingdomHQ checked Sep 16, 2026	51-200	86 contacts →
	Strong evidence “Advent Bioservices began activity as a cell therapy contract development & manufacturing organisation (CDMO) in 2016.” Source: RevenueBase Database · checked Sep 16, 2026
19	Pharmapac UK	Strong evidence	Bidston, United KingdomHQ checked Sep 16, 2026	201-500	86 contacts →
	Strong evidence “Incorporated in 1996, PharmaPac UK Ltd is a Contract Manufacturing Organisation (CMO) that specialises in the manufacture and packaging of a variety of drug delivery systems to…” Source: RevenueBase Database · checked Sep 16, 2026
20	SGS Cdmo Solutions	Strong evidence	Deeside, United KingdomHQ checked Sep 16, 2026	51-200	83 contacts →
	Strong evidence “Established in 2002, we are a premier GMP approved formulation contract development manufacturing organization (CDMO) offering services from MHRA and FDA inspected facilities:*…” Source: RevenueBase Database · checked Sep 16, 2026
21	Intertek Pharmaceutical Services	Indirect evidence	Manchester, United KingdomHQ checked Sep 16, 2026	51-200	82 contacts →
	Indirect evidence “Intertek Pharmaceutical Services Service Provider of gmp & cmc services, bioanalytical services & biopharmaceutical services” Source: RevenueBase Database · checked Sep 16, 2026
22	HBI Thompson & Capper	Partial evidence	Runcorn, United KingdomHQ checked Sep 16, 2026	201-500	76 contacts →
	Partial evidence “Thompson & Capper Ltd (T/A Ourvita) is a specialist contract manufacturer of high-quality tablets, hard-shell capsules, and powders, serving the nutraceutical, health, and…” Source: RevenueBase Database · checked Sep 16, 2026
23	Exmoor Pharma	Indirect evidence	Bristol, United KingdomHQ checked Sep 16, 2026	51-200	75 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 16, 2026
24	Amici Procurement Solutions	Partial evidence	Glasgow, United KingdomHQ checked Sep 16, 2026	51-200	64 contacts →
	Partial evidence “Amici provides a purchasing and supply chain management service, allowing biotech organisations to focus on discovering life changing innovations.” Source: RevenueBase Database · checked Sep 16, 2026
25	TMC Pharma Services LTD	Partial evidence	Hartley Wintney, United KingdomHQ checked Sep 16, 2026	501-1,000	63 contacts →
	Partial 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, 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: contract manufacturing organizations biotech. 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 contract manufacturing organizations biotech.
Partial evidence: Its own public description names part of contract manufacturing organizations biotech, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name contract manufacturing organizations biotech. 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 145 contract manufacturing organizations biotech based in the United Kingdom

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Contract manufacturing organizations biotech based in the United Kingdom at a glance

As of Sep 16, 2026

59.3%Verified-email coverage

73.3Average contacts per company

11-50Median size (employees)

13.8%Largest-city concentration · London

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

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 145 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 contract manufacturing organizations biotech, 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 “contract manufacturing organizations biotech”. 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 contract manufacturing organizations biotech), 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 contract manufacturing organizations biotech, 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, 6,304 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.

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 contract manufacturing organizations biotech, 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 contract manufacturing organizations biotech are there based in the United Kingdom?

RevenueBase identified 145 contract manufacturing organizations biotech 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?

Almac Group, headquartered in Craigavon, tops this list with the largest team on record.

Which city has the most contract manufacturing organizations biotech?

London leads with 20 headquartered companies, followed by Manchester (4) and Cambridge (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 6,304 verified decision-maker contacts tracked across these 145 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.