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Directory

Active Pharmaceutical Ingredient (API) Companies in the UK

Active pharmaceutical ingredient companies develop and manufacture the substances responsible for the therapeutic effects of medicines. These companies support pharmaceutical and biotechnology developers from early process development through to clinical and commercial production.

This category includes companies working on:

  • API synthesis and process development
  • Route optimisation and scale-up
  • GMP manufacturing and commercial supply
  • High-potency and complex active ingredients
  • Pharmaceutical intermediates and analytical services

Browse 29 UK active pharmaceutical ingredient companies below.

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Active Pharmaceutical Ingredients

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Showing 1–20 of 29
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Dextra Laboratories

South East England

Complex carbohydrate synthesis, catalogue products and CDMO services

Dextra Laboratories specialises in complex carbohydrate chemistry, supplying research products including oligosaccharides, monosaccharides, glycoconjugates and blood group antigens. It also offers contract development and manufacturing services for carbohydrate-based compounds, spanning discovery chemistry, process…

CDMOChemical & Analytical
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Biosynth

OxfordSouth East England

Chemical reagents and contract manufacturing for pharma and diagnostics supply chains

Biosynth Limited is the UK manufacturing and research entity of Biosynth, a global life sciences reagents and contract development and manufacturing organisation. Its Compton, Berkshire site specialises in complex chemical synthesis including carbohydrates, nucleosides, and enzyme substrates, supplying critical raw…

Reagents & ConsumablesChemical & Analytical
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GROW Group

LondonGreater London

Biopharmaceutical group distributing and developing cannabis-based medicines

GROW Group is a biopharmaceutical company focused exclusively on cannabis-based medicines, operating through complementary distribution and research divisions. Its UK distribution arm, Grow Group UK, is a licensed GMP specials manufacturer supplying prescribed cannabinoid medicines to patients via specialist…

BiotechDrug Delivery
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CrystecPharma

LeedsYorkshire

Crystal and particle engineering to improve drug performance

CrystecPharma is a pharmaceutical technology company that uses supercritical fluid processing to engineer drug crystals and particles. Its platform improves the dissolution, stability and delivery of small and large molecule medicines, including inhaled powders. The company provides formulation and process development…

CDMODrug Delivery
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Norgine

Wales

European specialty pharma focused on gastroenterology and hepatology

Norgine is a European specialty pharmaceutical company developing, manufacturing, and commercialising medicines across gastroenterology, hepatology, and cancer supportive care. Founded in 1906 and privately owned, the company markets a portfolio of specialty pharmaceutical products and medical devices across Europe,…

BiopharmaDrug Discovery
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Ingenza

EdinburghScotland

Engineering biology CRDMO for pharma and industrial biotech

Ingenza is a contract research, development, and manufacturing organisation applying engineering biology to solve manufacturing challenges across pharmaceuticals and industrial biotechnology. The company provides strain and cell line engineering, fermentation, bioprocess development, and analytical services for…

CROSynthetic Biology
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Elanco

LiverpoolNorth West England

Animal health medicines and APIs manufactured for global markets

Elanco UK is the principal UK subsidiary of Elanco Animal Health Incorporated, a global animal health company developing and manufacturing products for farm animals and pets. Its primary UK manufacturing site in Speke, Liverpool produces fermentation-derived active pharmaceutical ingredients and finished veterinary…

BiopharmaAnimal Health
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High Force Research

North East England

Chemistry-led CRO and CDMO for pharmaceutical and diagnostics R&D

High Force Research is an independent chemistry CRO and CDMO providing synthetic chemistry, process development, and GMP manufacturing services to the pharmaceutical, biotech, and diagnostics industries. Services span route design, complex synthesis, scale-up, and analytical development through to regulatory-grade…

CROChemical & Analytical
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CatSci

CardiffWales

Integrated chemistry and development CRO for small molecules

CatSci is a Cardiff-headquartered contract research organisation providing integrated chemistry, analytical, and development services to biotech and pharmaceutical companies. Founded in 2010 by former AstraZeneca scientists, the company offers process chemistry, analytical development, solid-state and preformulation…

CRODrug Discovery
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Aptuit

OxfordSouth East England

API development and manufacturing for pharmaceutical drug substances

Aptuit is a pharmaceutical chemical development and manufacturing site operating as part of Evotec's API and drug product network. The company develops and manufactures active pharmaceutical ingredients for small molecule drugs, offering route scouting, process development and scale-up, polymorph screening, analytical…

CDMOBioprocessing & Manufacturing
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Quotient Sciences

NottinghamMidlands

Integrated drug development, formulation and Phase I clinical services

Quotient Sciences is a contract research, development and manufacturing organisation providing integrated drug development services to pharmaceutical and biotech companies. Its proprietary platform combines drug product formulation, clinical trial manufacturing, and Phase I clinical testing within a single programme,…

CDMODrug Discovery
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Eurofins Selcia

East of England

Custom radiolabelling and integrated small molecule drug discovery services

Eurofins Selcia is a contract research organisation specialising in custom carbon-14 and stable isotope radiolabelling, GMP radiolabelled API manufacturing, and integrated small molecule drug discovery. Its radiochemistry services support preclinical and clinical ADME studies, human mass balance trials, dermal…

CRODrug Discovery
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Concept Life Sciences

ManchesterNorth West England

Integrated drug discovery, development and GMP manufacturing CRO

Concept Life Sciences is a contract research organisation delivering integrated drug discovery, development and GMP manufacturing services across facilities in Chapel-en-le-Frith, Edinburgh, Dundee and Sandwich. Its capabilities span medicinal chemistry, translational biology, ADME/DMPK, toxicology and GxP-compliant…

CROBioprocessing & Manufacturing
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HydRegen

OxfordSouth East England

Enzyme-based platform for sustainable industrial chemical manufacture

HydRegen is a biotechnology company developing enzyme immobilisation platforms that replace heavy-metal catalysts in redox and hydrogenation reactions. The technology uses hydrogen gas to power NADH-dependent enzymes on carbon supports, enabling continuous flow processing of fine chemicals and active pharmaceutical…

Biotech (Industrial)Chemical & Analytical
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Apollo Scientific

ManchesterNorth West England

Fluorinated building blocks and fine chemicals for research and pharma

Apollo Scientific is a manufacturer and supplier of fine chemicals for research and pharmaceutical development, specialising in aromatic, heterocyclic and fluorinated building blocks. It holds a large stock of building blocks and intermediates for rapid dispatch, alongside reagents for life science research. The…

Reagents & ConsumablesChemical & Analytical
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Amano Enzyme

OxfordSouth East England

Specialty enzyme manufacturer serving food, diagnostics and pharmaceutical industries

Amano Enzyme Europe is the UK subsidiary of Japanese specialty enzyme manufacturer Amano Enzyme Inc, serving as its EMEA hub. The company supplies microbial enzymes for food and beverage processing, dietary supplements, pharmaceutical manufacturing and clinical diagnostics. Its UK laboratories support enzyme…

Reagents & ConsumablesFood & Drink
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Active Pharma Supplies

ManchesterNorth West England

API and excipient supplier for pharmaceutical manufacturers

Active Pharma Supplies is a UK-based distributor and licensed repackager of active pharmaceutical ingredients and excipients, supplying hospitals, licensed specials manufacturers, pharmacies, and pharmaceutical producers. The company holds MHRA manufacturer and GDP licences and operates to EUGMP and EUGMDP quality…

Distributor / SupplierChemical & Analytical
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Catalent Pharma Solutions

South West England

Global CDMO for drug development, delivery and manufacture

Catalent Pharma Solutions is a contract development and manufacturing organisation providing drug development, formulation, and manufacturing services across small molecules, biologics, cell and gene therapies, and consumer health products. The company offers proprietary drug delivery platforms including its orally…

CDMOBioprocessing & Manufacturing
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Kedrion Biopharma

East of England

Plasma fractionation and manufacture of plasma-derived therapies

Kedrion Biopharma is a biopharmaceutical manufacturer specialising in the fractionation of human blood plasma to produce albumin solutions, immunoglobulins and coagulation factors for the treatment of rare and life-threatening conditions including immunodeficiencies and bleeding disorders. Operating from a 130,000…

BiopharmaBioprocessing & Manufacturing
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Veranova

CambridgeEast of England

Solid form sciences and API development for drug candidates

Veranova's Cambridge site is a centre of excellence in solid form and particle engineering, operating under the Pharmorphix brand. The facility provides polymorph screening, salt selection, co-crystallisation, chiral separations, and process scale-up services to pharmaceutical and biotechnology customers. Part of…

CDMODrug Discovery
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