A Sterling Heritage
Sterling has over 50 years’ experience providing services to pharmaceutical and biotech companies. We specialise in complexity and technical innovation; our core services include high potency APIs, hazardous chemistry, controlled substances and peptides, as well as flow chemistry and biocatalysis.
API Development
and Manufacturing
At Sterling we provide comprehensive services throughout the lifecycle of your molecule, from route scouting and design to process optimisation and clinical supply to commercial cGMP manufacturing.
ADC Development
and Manufacturing
Drawing upon years of experience working with ADCs from their earliest inception, our dedicated bioconjugation team is committed to supporting your project from discovery and development to preclinical and clinical cGMP manufacture.

Service.
Passion.
Science.
Great People,
Great Experience
We pride ourselves on our culture and values, which help us to deliver not only an exceptional experience to our customers, but also to our employees. Our people are at the heart of our business, and have made us what we are today.
More about our people and values
The Molecule
Lifecycle
We accelerate your product’s path to market by delivering unrivalled support at every stage of the pharmaceutical lifecycle.
A full view of the lifecycleOur integrated network of facilities across the UK, USA and Europe have a wide range of capabilities and capacities to suit all our customers needs. Our global teams work together to develop projects across facilities and borders, where required, to make best use of the expertise at each of our locations. Wherever your project is based you will experience the same values and culture Sterling is known for.

Cramlington, UK
API development and manufacturing facilities that can support your product from grammes to tonnes
Newcastle Biosphere, UK
Extensive research and development expertise supporting your early phase small molecule projects
North Carolina, US
Supporting your product from preclinical through to phase II with full service API development and manufacturing
Wisconsin, US
API development and manufacturing facilities that can support your product from grammes to tonnes
Cork, Ireland
A dedicated API manufacturing facility with specialist expertise in peptide manufacturing and large scale chromatography
Deeside, Wales
A dedicated facility providing preclinical ADC research and development bioconjugation and clinical manufacturing services