Company lists · Data refreshed October 2026

Top 25 Biotech api manufacturers based in the United Kingdom

RevenueBase identified 72 company matches for biotech api manufacturers associated with the United Kingdom as of October 2026 and tracks 825 professional contacts across them, including 412 with verified work emails. London is the largest hub.

This list covers company matches for biotech api manufacturers associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 8, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Oct 8, 2026 How this list was built
72Companies
825Contacts tracked
412Verified emails
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The 25 largest biotech api manufacturers based in the United Kingdom

Ranked by team size
Top 25 of 72 company matches for biotech api manufacturers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 8, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchCardiff, United KingdomHQ recorded Oct 8, 202651-20090 contacts →

Exact match

“Biocatalysts is a biotechnology company producing speciality enzymes at commercial scales for a variety of industries.”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
2Exact matchSunderland, United KingdomHQ recorded Oct 8, 202651-20088 contacts →

Exact match

“Onyx Scientific is a CDMO that helps pharmaceutical and biotech companies across the globe, accelerate candidates from discovery to manufacturing.”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
3Exact matchWinchester, United KingdomHQ recorded Oct 8, 202651-20064 contacts →

Exact match

“Biopharma Group has dedicated divisions covering the UK, France, Ireland, and USA.”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
4Exact matchDarlington, United KingdomHQ recorded Oct 8, 202651-20046 contacts →

Exact match

“Molekula is a manufacturer and distributor of Fine Chemicals and Biochemicals in Bulk and Research quantities Founded in in France and the UK to initially support the Chemical…”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
5Exact matchHitchin, United KingdomHQ recorded Oct 8, 202651-20038 contacts →

Exact match

“For over 180 years, Ransom Naturals has combined botanical expertise with scientific excellence to develop and manufacture premium natural extracts for the pharmaceutical…”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
6Exact matchHadfield, United KingdomHQ recorded Oct 8, 202651-20037 contacts →

Exact match

“Fluorochem is a leading supplier in the chemical industry, with nearly 60 years of experience supporting scientists in chemistry, pharmaceuticals and medicinal chemistry, and…”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
7Exact matchCambridge, United KingdomHQ recorded Oct 8, 202611-5031 contacts →

Exact match

“Isomerase helps partners innovate and harness the microbial power of a wide range of bacteria and fungi to discover and produce native or novel natural products, peptides, and…”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
8Exact matchHigh Wycombe, United KingdomHQ recorded Oct 8, 202611-5027 contacts →

Exact match

“Experts in Active Pharmaceutical Ingredients(APIs), Intermediates and other difficult to source Pharmaceutical ingredients- Cover APIs requirements from Development, Scale-Up and…”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
9Exact matchCorsham, United KingdomHQ recorded Oct 8, 202611-5022 contacts →

Exact match

“Glentham Life Sciences is a UK-headquartered supplier of fine chemicals, biochemicals and raw materials.”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
10Exact matchMilton Park, United KingdomHQ recorded Oct 8, 202611-5021 contacts →

Exact match

“Hypha Discovery is a specialist CRO with expertise in metabolite profiling (MetID), synthesis, purification and structure elucidation using NMR spectroscopy.”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
11Exact matchAlderley Edge, United KingdomHQ recorded Oct 8, 202611-5020 contacts →

Exact match

“Apex Molecular is a leading UK based Chemistry Services Contract Research Organisation based at Alderley Park, providing specialist chemistry services to the pharmaceutical…”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
12Exact matchBristol, United KingdomHQ recorded Oct 8, 202611-5020 contacts →

Exact match

“We are a bioprocessing partner for the sustainable bio-economy.”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
13Exact matchReading, United KingdomHQ recorded Oct 8, 202611-5018 contacts →

Exact match

“For the total GMP synthesis of complex carbohydrates and carbohydrate based medicinal chemistry, Dextra has a proven record of developing innovative solutions to minimise costs…”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
14Exact matchDurham, United KingdomHQ recorded Oct 8, 202611-5017 contacts →

Exact match

“High Force Research specialise in chemical synthesis and R&D and offer chemistry built on many years of experience in development and scale-up of complex syntheses of molecules…”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Oct 8, 202611-5015 contacts →

Exact match

“AB BIOTECHNOLOGY LIMITED is a biotechnology company based out of Pentlands Science Park, Bush Loan, Penicuik, Midlothian, EH26 0PZ”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
16Exact matchRedditch, United KingdomHQ recorded Oct 8, 202611-5012 contacts →

Exact match

“Recognised globally as a leading UK-based manufacturing and analytical laboratory, we specialise in the synthesis of peptides, oligonucleotides, and antibodies, as well as the…”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
17Exact matchRuncorn, United KingdomHQ recorded Oct 8, 202611-5012 contacts →

Exact match

“Actylis was created from the merger of eight experienced specialty manufacturing companies and three sourcing firms, integrated into a single entity.”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
18Exact matchBristol, United KingdomHQ recorded Oct 8, 20261-1010 contacts →

Exact match

“Zentraxa’s proprietary technological platform, Zentide, combined with our extensive technical know-how allows us to push the boundaries of what can be achieved with synthetic…”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Oct 8, 202611-509 contacts →

Exact match

“CINV is a pharmaceutical supplier focused on producing a GMP-certified product for global execution from our South African facility.”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
20Exact matchLinlithgow, United KingdomHQ recorded Oct 8, 20261-108 contacts →

Exact match

“We are a Scottish Biotech company with a new method of producing peptides.”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
21Exact matchEdinburgh, United KingdomHQ recorded Oct 8, 20261-106 contacts →

Exact match

“By mining the genome using our bioinformatics platform we discover and re-purpose natural gene regulatory elements, creating customised gene expression systems to: 1.”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
22Exact matchRedditch, United KingdomHQ recorded Oct 8, 202611-506 contacts →

Exact match

“Ubichem partners with Pharmaceutical Innovators who trust Ubichem to provide ultimate customer value through technical, product and regulatory solutions.”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
23Exact matchHitchin, United KingdomHQ recorded Oct 8, 20261-106 contacts →

Exact match

“MSN LABORATORIES EUROPE LIMITED is a company based out of INVISION HOUSE WILBURY WAY, HITCHIN, United Kingdom.”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
24Exact matchWarrington, United KingdomHQ recorded Oct 8, 20261-104 contacts →

Exact match

“Daresbury Proteins Ltd specializes in mammalian recombinant protein production and cell line development.”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase
25Exact matchAshford, United KingdomHQ recorded Oct 8, 20261-103 contacts →

Exact match

“Wessex Fine Chemicals has been sourcing and supplying active substances to medicine manufacturers since its incorporation in 1994.”

Recorded in the RevenueBase company graph · Oct 8, 2026 · View company records in RevenueBase

Showing 25 of 72 biotech api manufacturers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 412 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Biotech api manufacturers based in the United Kingdom at a glance

As of Oct 8, 2026
49.9%Verified-email coverage
11.5Average contacts per company
11-50Median size (employees)
15.3%Largest-city concentration · London
Oct 8, 2026Page data refreshed

Companies by employee count

1-10
28
11-50
30
51-200
10
501-1,000
2
1,001-5,000
1
10001+
1

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 72 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United Kingdom whose business descriptions match “biotech api manufacturers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 412 professional contacts with verified work emails across the full matched dataset. 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 October 8, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “biotech api manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many biotech api manufacturers are there based in the United Kingdom?

RevenueBase identified 72 company matches for biotech api manufacturers associated with the United Kingdom as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Biocatalysts LTD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most biotech api manufacturers?

London leads with 11 company records, followed by Bristol (3) and Cambridge (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 412 professional contacts with verified work emails tracked across these 72 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 8, 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 SmartSearch, 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.