Company lists · Data refreshed September 2026

Top 25 Apis and intermediates producers based in the United Kingdom

RevenueBase identified 147 company matches for apis and intermediates producers associated with the United Kingdom as of September 2026 and tracks 2,883 professional contacts across them, including 607 with verified work emails. London is the largest hub.

This list covers company matches for apis and intermediates producers 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 September 19, 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 Sep 19, 2026 How this list was built
147Companies
2,883Contacts tracked
607Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest apis and intermediates producers based in the United Kingdom

Ranked by team size
Top 25 of 147 company matches for apis and intermediates producers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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 matchHemel Hempstead, United KingdomHQ recorded Sep 19, 20261,001-5,000157 contacts →

Exact match

“Aesica is a leading pharmaceutical contract development and manufacturing organisation (CDMO) for both APIs and finished dose forms.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchAlnwick, United KingdomHQ recorded Sep 19, 202651-200102 contacts →

Exact match

“Arcinova, A Quotient Sciences Company, is dedicated to providing innovative contract research, development, and manufacturing services.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchConsett, United KingdomHQ recorded Sep 19, 202651-20087 contacts →

Exact match

“Thomas Swan & Co.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchMaidenhead, United KingdomHQ recorded Sep 19, 202651-20087 contacts →

Exact match

“Founded in 2013 and operationalized in 2016, Noumed Life Sciences is a generics pharmaceutical manufacturing company based out of the United Kingdom.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchSunderland, United KingdomHQ recorded Sep 19, 202651-20086 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 · Sep 19, 2026 · View company records in RevenueBase
6Exact matchRuncorn, United KingdomHQ recorded Sep 19, 202651-20050 contacts →

Exact match

“Founded in 1860, Banner supplies an extensive range of solvents and specialty chemicals to a variety of market sectors.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchDenton, United KingdomHQ recorded Sep 19, 202651-20047 contacts →

Exact match

“We’re specialists in the manufacture and supply of aromatic, heterocyclic and aliphatic compounds, fluorochemicals and life sciences reagents, offering unrivalled service and…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchDarlington, United KingdomHQ recorded Sep 19, 202651-20044 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 · Sep 19, 2026 · View company records in RevenueBase
9Exact matchS41, United KingdomHQ recorded Sep 19, 202651-20041 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchLiverpool, United KingdomHQ recorded Sep 19, 202611-5040 contacts →

Exact match

“Powder Systems Ltd (PSL) is a global manufacturer of innovative technologies and process services used in the pharmaceutical, life sciences, and fine chemicals industries.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchHitchin, United KingdomHQ recorded Sep 19, 202651-20037 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 · Sep 19, 2026 · View company records in RevenueBase
12Exact matchDurham, United KingdomHQ recorded Sep 19, 202611-5036 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 · Sep 19, 2026 · View company records in RevenueBase
13Exact matchWallington, United KingdomHQ recorded Sep 19, 202611-5036 contacts →

Exact match

“Thew Arnott is focussed on the development, manufacture and sales of speciality ingredients.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchDaventry, United KingdomHQ recorded Sep 19, 202611-5034 contacts →

Exact match

“Endeavour Speciality Chemicals is an innovative UK-based manufacturer of speciality organic intermediates and together with our parent company Robinson Brothers we offer products…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchHadfield, United KingdomHQ recorded Sep 19, 202651-20030 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 · Sep 19, 2026 · View company records in RevenueBase
16Exact matchAlderley Edge, United KingdomHQ recorded Sep 19, 202611-5027 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 · Sep 19, 2026 · View company records in RevenueBase
17Exact matchHigh Wycombe, United KingdomHQ recorded Sep 19, 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 · Sep 19, 2026 · View company records in RevenueBase
18Exact matchFinchley, United KingdomHQ recorded Sep 19, 202651-20025 contacts →

Exact match

“Whyte Chemicals is a privately owned company established in 1976 with a turnover in the region of 60 million.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchCamelford, United KingdomHQ recorded Sep 19, 202611-5023 contacts →

Exact match

“Key Organics is a leading UK-based chemistry CRO providing a range of discovery, research and development services to the international life sciences industries.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchCo.londonderry, United KingdomHQ recorded Sep 19, 202611-5021 contacts →

Exact match

“NICOBRAND LIMITED is a Pharmaceutical company located in Castleroe Road, Coleraine, Northern Ireland.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchCorsham, United KingdomHQ recorded Sep 19, 202611-5021 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchManchester, United KingdomHQ recorded Sep 19, 202611-5021 contacts →

Exact match

“Colour Synthesis Solutions (CSS) is a leading provider of fine chemicals and chemistry research and development services.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchMilton Park, United KingdomHQ recorded Sep 19, 202611-5019 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 · Sep 19, 2026 · View company records in RevenueBase
24Exact matchReading, United KingdomHQ recorded Sep 19, 202611-5019 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 · Sep 19, 2026 · View company records in RevenueBase
25Exact matchBury St. Edmunds, United KingdomHQ recorded Sep 19, 202611-5018 contacts →

Exact match

“Witton Chemical Company specialises in the manufacture of fine chemicals and polymers, including product isolation and drying from flammable solvents, a variety of exothermic…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 147 apis and intermediates producers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 607 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Apis and intermediates producers based in the United Kingdom at a glance

As of Sep 19, 2026
21.1%Verified-email coverage
19.6Average contacts per company
11-50Median size (employees)
19.7%Largest-city concentration · London
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
60
11-50
55
51-200
20
201-500
5
501-1,000
2
1,001-5,000
3
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 147 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 “apis and intermediates producers” 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 607 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 September 19, 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 “apis and intermediates producers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many apis and intermediates producers are there based in the United Kingdom?

RevenueBase identified 147 company matches for apis and intermediates producers associated with the United Kingdom as of September 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?

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

Which city has the most apis and intermediates producers?

London leads with 29 company records, followed by Runcorn (5) and Harrow (3).

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 607 professional contacts with verified work emails tracked across these 147 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 September 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 147 apis and intermediates producers based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related 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 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.