Company lists · Data refreshed September 2026

Top 25 Pharmaceutical synthesis companies based in the United Kingdom

Name: Pharmaceutical synthesis companies 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 355 companies tracked

RevenueBase identified 355 company matches for pharmaceutical synthesis companies associated with the United Kingdom as of September 2026 and tracks 15,609 professional contacts across them, including 4,997 with verified work emails. London is the largest hub.

This list covers company matches for pharmaceutical synthesis companies 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 17, 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 17, 2026 How this list was built

355Companies

15,609Contacts tracked

4,997Verified emails

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The 25 largest pharmaceutical synthesis companies based in the United Kingdom

Ranked by team size

Top 25 of 355 company matches for pharmaceutical synthesis companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	GW Pharmaceuticals PLC	Exact match	Cambridge, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	218 contacts →
	Exact match “GW Pharmaceuticals is now part of Jazz Pharmaceuticals.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Aspire Pharma LTD	Exact match	Petersfield, United KingdomHQ recorded Sep 17, 2026	51-200	176 contacts →
	Exact match “Aspire Pharma is an innovative, privately owned British pharmaceutical company established in 2009.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Lianhetech Europe Limited	Exact match	Middlesbrough, United KingdomHQ recorded Sep 17, 2026	201-500	160 contacts →
	Exact match “Lianhetech Seal Sands is a leading European contract manufacturer of high quality fine chemicals for use in the Crop Protection, Pharmaceutical and Performance chemicals markets.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Aesica Pharmaceuticals LTD	Exact match	Hemel Hempstead, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	157 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 17, 2026 · View company records in RevenueBase
5	IVC Brunel Healthcare Limited	Exact match	Swadlincote, United KingdomHQ recorded Sep 17, 2026	501-1,000	119 contacts →
	Exact match “IVC Brunel Healthcare are the UK division of the IVC Group.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Catsci LTD	Exact match	Wentloog, United KingdomHQ recorded Sep 17, 2026	51-200	114 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Upperton Pharma Solutions	Exact match	Beeston, United KingdomHQ recorded Sep 17, 2026	51-200	110 contacts →
	Exact match “Upperton Pharma Solutions is a specialist CDMO (contract development and manufacturing organisation) providing formulation and dosage form development and clinical trial…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Arcinova	Exact match	Alnwick, United KingdomHQ recorded Sep 17, 2026	51-200	102 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 17, 2026 · View company records in RevenueBase
9	Orbit Pharmaceuticals	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	100 contacts →
	Exact match “Orbit Pharma is a rapidly expanding, privately owned company focused on the development and marketing of high quality, specialist generic medicines across the UK, Europe, ANZ…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	IPS Pharma	Exact match	West Molesey, United KingdomHQ recorded Sep 17, 2026	51-200	91 contacts →
	Exact match “IPS Pharma is an independent international pharmaceutical services company operating in three main areas: Unlicensed medicines (Unlicensed Imports and Specials), Clinical Trials…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Bath ASU	Exact match	Corsham, United KingdomHQ recorded Sep 17, 2026	51-200	88 contacts →
	Exact match “Bath ASU is a pharmaceutical specials manufacturer based in Corsham, Wiltshire.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Thomas Swan & Co. LTD	Exact match	Consett, United KingdomHQ recorded Sep 17, 2026	51-200	87 contacts →
	Exact match “Thomas Swan & Co.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Noumed Life Sciences Limited	Exact match	Maidenhead, United KingdomHQ recorded Sep 17, 2026	51-200	87 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 17, 2026 · View company records in RevenueBase
14	Onyx Scientific	Exact match	Sunderland, United KingdomHQ recorded Sep 17, 2026	51-200	86 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 17, 2026 · View company records in RevenueBase
15	Bioascent	Exact match	Newhouse, United KingdomHQ recorded Sep 17, 2026	51-200	84 contacts →
	Exact match “Founded in 2013, BioAscent is a leading provider of integrated drug discovery services based at the former Organon / MSD R&D site in Newhouse, Scotland, UK.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	SGS Cdmo Solutions	Exact match	Deeside, United KingdomHQ recorded Sep 17, 2026	51-200	83 contacts →
	Exact match “Established in 2002, we are a premier GMP approved formulation contract development manufacturing organization (CDMO) offering services from MHRA and FDA inspected facilities:*…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	GFA	Exact match	Ely, United KingdomHQ recorded Sep 17, 2026	11-50	76 contacts →
	Exact match “In September 2015, GFA became Envigo.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Omass Therapeutics	Exact match	Oxford, United KingdomHQ recorded Sep 17, 2026	11-50	66 contacts →
	Exact match “OMass Therapeutics is a private pharmaceutical company, focused on structural mass spectrometry to discover novel medicines.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Teva UK Limited	Exact match	Eastbourne, United KingdomHQ recorded Sep 17, 2026	51-200	66 contacts →
	Exact match “UK/IE operation of a expanding global conglomerate Company dealing in pharmaceutical generics with added-value as well as routine products.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Seda Pharmaceutical Development & Clinical Manufacturing Services	Exact match	Cheadle, United KingdomHQ recorded Sep 17, 2026	11-50	60 contacts →
	Exact match “Seda Pharmaceutical Development Services provide Integrated Pharmaceutical Development and Clinical Pharmacology services and consultancy to the Pharma and Biotechnology…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Galen LTD	Exact match	Belfast, United KingdomHQ recorded Sep 17, 2026	11-50	57 contacts →
	Exact match “At Galen, we have purpose and passion in everything we do and encourage our people to dare to be extraordinary so we can benefit the health of all generations.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Aristo Pharma Limited	Exact match	Ely, United KingdomHQ recorded Sep 17, 2026	n/a	48 contacts →
	Exact match “Aristo Pharma Limited supply a rapidly growing portfolio of in-demand generic and branded medicines with the aim of ensuring important medicines remain affordable.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Apollo Scientific LTD	Exact match	Denton, United KingdomHQ recorded Sep 17, 2026	51-200	47 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 17, 2026 · View company records in RevenueBase
24	Molekula Group	Exact match	Darlington, United KingdomHQ recorded Sep 17, 2026	51-200	44 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 17, 2026 · View company records in RevenueBase
25	MNK	Exact match	S41, United KingdomHQ recorded Sep 17, 2026	51-200	41 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “pharmaceutical synthesis companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 355 pharmaceutical synthesis companies based in the United Kingdom

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Pharmaceutical synthesis companies based in the United Kingdom at a glance

As of Sep 17, 2026

32.0%Verified-email coverage

44.0Average contacts per company

11-50Median size (employees)

21.1%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

159

11-50

107

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 355 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 “pharmaceutical synthesis companies” 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 4,997 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 17, 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 “pharmaceutical synthesis companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many pharmaceutical synthesis companies are there based in the United Kingdom?

RevenueBase identified 355 company matches for pharmaceutical synthesis companies 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?

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

Which city has the most pharmaceutical synthesis companies?

London leads with 75 company records, followed by Cambridge (9) and Manchester (7).

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 4,997 professional contacts with verified work emails tracked across these 355 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 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 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.