Company lists · Data refreshed September 2026

Top 25 Active pharmaceutical ingredients suppliers based in the United Kingdom

Name: Active pharmaceutical ingredients suppliers 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 78 companies tracked

RevenueBase identified 78 active pharmaceutical ingredients suppliers headquartered in the United Kingdom as of September 2026 and tracks 812 professional contacts across them, including 244 with verified work emails. London is the largest hub.

This list covers active pharmaceutical ingredients suppliers 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

78Companies

812Contacts tracked

244Verified emails

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The 25 largest active pharmaceutical ingredients suppliers based in the United Kingdom

Ranked by team size

Top 25 of 78 active pharmaceutical ingredients suppliers 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 active pharmaceutical ingredients suppliers: 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	Apollo Scientific LTD	Indirect evidence	Denton, United KingdomHQ checked Sep 16, 2026	51-200	47 contacts →
	Indirect evidence “We’re specialists in the manufacture and supply of aromatic, heterocyclic and aliphatic compounds, fluorochemicals and life sciences reagents, offering unrivalled service and…” Source: RevenueBase Database · checked Sep 16, 2026
2	Molekula Group	Indirect evidence	Darlington, United KingdomHQ checked Sep 16, 2026	51-200	44 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
3	MNK	Indirect evidence	S41, United KingdomHQ checked Sep 16, 2026	51-200	41 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
4	Ransom Naturals LTD	Partial evidence	Hitchin, United KingdomHQ checked Sep 16, 2026	51-200	37 contacts →
	Partial evidence “For over 180 years, Ransom Naturals has combined botanical expertise with scientific excellence to develop and manufacture premium natural extracts for the pharmaceutical…” Source: RevenueBase Database · checked Sep 16, 2026
5	High Force Research LTD	Indirect evidence	Durham, United KingdomHQ checked Sep 16, 2026	11-50	36 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
6	Fluorochem LTD	Strong evidence	Hadfield, United KingdomHQ checked Sep 16, 2026	51-200	30 contacts →
	Strong evidence “Fluorochem is a leading supplier in the chemical industry, with nearly 60 years of experience supporting scientists in chemistry, pharmaceuticals and medicinal chemistry, and…” Source: RevenueBase Database · checked Sep 16, 2026
7	Apex Molecular LTD	Partial evidence	Alderley Edge, United KingdomHQ checked Sep 16, 2026	11-50	27 contacts →
	Partial evidence “Apex Molecular is a leading UK based Chemistry Services Contract Research Organisation based at Alderley Park, providing specialist chemistry services to the pharmaceutical…” Source: RevenueBase Database · checked Sep 16, 2026
8	Universal Pharma LTD	Strong evidence	High Wycombe, United KingdomHQ checked Sep 16, 2026	11-50	27 contacts →
	Strong evidence “Experts in Active Pharmaceutical Ingredients(APIs), Intermediates and other difficult to source Pharmaceutical ingredients- Cover APIs requirements from Development, Scale-Up and…” Source: RevenueBase Database · checked Sep 16, 2026
9	Whyte Chemicals LTD	Indirect evidence	Finchley, United KingdomHQ checked Sep 16, 2026	51-200	25 contacts →
	Indirect evidence “Whyte Chemicals is a privately owned company established in 1976 with a turnover in the region of 60 million.” Source: RevenueBase Database · checked Sep 16, 2026
10	Glentham Life Sciences LTD	Partial evidence	Corsham, United KingdomHQ checked Sep 16, 2026	11-50	21 contacts →
	Partial evidence “Glentham Life Sciences is a UK-headquartered supplier of fine chemicals, biochemicals and raw materials.” Source: RevenueBase Database · checked Sep 16, 2026
11	Dextra Laboratories	Indirect evidence	Reading, United KingdomHQ checked Sep 16, 2026	11-50	19 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
12	Witton Chemical Company LTD	Indirect evidence	Bury St. Edmunds, United KingdomHQ checked Sep 16, 2026	11-50	18 contacts →
	Indirect evidence “Witton Chemical Company specialises in the manufacture of fine chemicals and polymers, including product isolation and drying from flammable solvents, a variety of exothermic…” Source: RevenueBase Database · checked Sep 16, 2026
13	MSN Laboratories Europe Limited	Indirect evidence	Hitchin, United KingdomHQ checked Sep 16, 2026	1-10	13 contacts →
	Indirect evidence “MSN LABORATORIES EUROPE LIMITED is a company based out of INVISION HOUSE WILBURY WAY, HITCHIN, United Kingdom.” Source: RevenueBase Database · checked Sep 16, 2026
14	Active Pharma Supplies Limited	Indirect evidence	Leyland, United KingdomHQ checked Sep 16, 2026	11-50	11 contacts →
	Indirect evidence “All the starting materials you require – rapidly.” Source: RevenueBase Database · checked Sep 16, 2026
15	Protec Ingredia LTD	Indirect evidence	Borehamwood, United KingdomHQ checked Sep 16, 2026	11-50	11 contacts →
	Indirect evidence “ProTec Ingredia was born in 2011.” Source: RevenueBase Database · checked Sep 16, 2026
16	Syntor Fine Chemicals LTD NOW Actylis	Indirect evidence	Runcorn, United KingdomHQ checked Sep 16, 2026	11-50	11 contacts →
	Indirect evidence “Actylis was created from the merger of eight experienced specialty manufacturing companies and three sourcing firms, integrated into a single entity.” Source: RevenueBase Database · checked Sep 16, 2026
17	CINV	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	9 contacts →
	Strong evidence “CINV is a pharmaceutical supplier focused on producing a GMP-certified product for global execution from our South African facility.” Source: RevenueBase Database · checked Sep 16, 2026
18	Unifect LTD	Strong evidence	Fernhurst, United KingdomHQ checked Sep 16, 2026	11-50	8 contacts →
	Strong evidence “Unifect Ltd offers a comprehensive range of uniquely effective ingredients to the cosmetic and pharmaceutical industries sourced from some of the foremost suppliers” Source: RevenueBase Database · checked Sep 16, 2026
19	Millstone Durbax LTD	Strong evidence	Runcorn, United KingdomHQ checked Sep 16, 2026	11-50	6 contacts →
	Strong evidence “Millstone Durbax manufactures, develops and supplies high-quality speciality feed additives, pharmaceutical, and chemical industries.” Source: RevenueBase Database · checked Sep 16, 2026
20	Ubichem	Partial evidence	Redditch, United KingdomHQ checked Sep 16, 2026	11-50	6 contacts →
	Partial evidence “Ubichem partners with Pharmaceutical Innovators who trust Ubichem to provide ultimate customer value through technical, product and regulatory solutions.” Source: RevenueBase Database · checked Sep 16, 2026
21	Euro-Link Pharma	Partial evidence	Luton, United KingdomHQ checked Sep 16, 2026	1-10	6 contacts →
	Partial evidence “Established in 2014, Euro-Link Pharma is a niche pharmaceutical company based in Luton, UK.” Source: RevenueBase Database · checked Sep 16, 2026
22	Wessex Fine Chemicals Limited	Partial evidence	Ashford, United KingdomHQ checked Sep 16, 2026	1-10	3 contacts →
	Partial evidence “Wessex Fine Chemicals has been sourcing and supplying active substances to medicine manufacturers since its incorporation in 1994.” Source: RevenueBase Database · checked Sep 16, 2026
23	Pharmhe UK LTD	Strong evidence	Staines, United KingdomHQ checked Sep 16, 2026	11-50	3 contacts →
	Strong evidence “PharmHe (UK) offers comprehensive Pharmaceutical, Nutrition and food ingredients and technical services.” Source: RevenueBase Database · checked Sep 16, 2026
24	Fine & Performance Chemicals Limited	Partial evidence	Yarm, United KingdomHQ checked Sep 16, 2026	11-50	2 contacts →
	Partial evidence “FPC has for over 25 years produced high quality fine chemicals for customers within the pharmaceutical, agrochemical and specialty chemical industries and works closely with its…” Source: RevenueBase Database · checked Sep 16, 2026
25	Alium Medical Limited	Indirect evidence	Loughton, United KingdomHQ checked Sep 16, 2026	1-10	2 contacts →
	Indirect evidence 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: active pharmaceutical ingredients suppliers. 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 active pharmaceutical ingredients suppliers.
Partial evidence: Its own public description names part of active pharmaceutical ingredients suppliers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name active pharmaceutical ingredients suppliers. 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 78 active pharmaceutical ingredients suppliers based in the United Kingdom

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Active pharmaceutical ingredients suppliers based in the United Kingdom at a glance

As of Sep 16, 2026

30.0%Verified-email coverage

10.4Average contacts per company

11-50Median size (employees)

19.2%Largest-city concentration · London

Sep 16, 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 78 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 active pharmaceutical ingredients suppliers, 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 “active pharmaceutical ingredients suppliers”. 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 active pharmaceutical ingredients suppliers), 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 active pharmaceutical ingredients suppliers, 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, 244 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 active pharmaceutical ingredients suppliers, 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 active pharmaceutical ingredients suppliers are there based in the United Kingdom?

RevenueBase identified 78 active pharmaceutical ingredients suppliers 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?

Apollo Scientific LTD, headquartered in Denton, tops this list with the largest team on record.

Which city has the most active pharmaceutical ingredients suppliers?

London leads with 15 headquartered companies, followed by Nottingham (3) and Runcorn (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 244 verified decision-maker contacts tracked across these 78 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.