Explore our facilities

Onyx’s UK and US locations support customers from early phase clinical development right through to commercialisation. Bringing together our world-class chemists and industry know-how, we are addressing global API supply needs for even the most challenging compounds.

Sunderland, UK

Our UK facility spans over 3,000 square metres and is home to our MHRA-accredited laboratories for R&D, custom synthesis and process development chemistry, alongside our specialist 50 L kilo-laboratories (ISO 8) for GMP manufacture of Phase I to III clinical trial materials (we are expecting our commercial API manufacturing license in 2021). This site also houses our dedicated solid state, analytical and stability testing facilities.

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North Carolina, US

For over 20 years, our FDA-accredited pilot facility in the US has provided GMP manufacturing services across three multi-purpose GMP manufacturing suites up to 2,000 gallons / 8,000 litres.  With R&D facilities situated alongside GMP analytical laboratories (including stability testing) and manufacturing suites we offer all the advantages of internal tech-transfer for gram quantity processes through scale-up to multi-ton commercial manufacture.

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