Clinical Services International (CSI) is a world leader in the sourcing and management of quality certified commercially available medicines (comparators, concomitant medication, rescue medication) for clinical trials.

Headquartered in London and with operations in the UK, Germany, Japan and the USA, we provide efficient solutions and serve global trials. We are passionate about customer service, quality, innovation and making rapidly available safe medicines. Our long standing experience in intelligent sourcing and clinical trials enables us to provide custom made solutions to address the most complex requirements. We accelerate drug development and reduce timelines by providing a fully integrated service.

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CSI's Growth and Excellence

At CSI, we expertly source and distribute medication as well as ensuring operational excellence of our services. As we grow through improving our client portfolio and expanding our sourcing outreach, the key to our success is our market knowledge, our broad network and long standing relationships with global suppliers and manufacturers, robust SOPs and quality focused operations.

Our committed and trusted team work closely with highly qualified and vetted suppliers to follow trends in the market, proactively anticipate and provide additional solutions in a challenging environment. While clients see our value through the whole supply chain process, when we integrate early in the trial process, our unique experience and clinical trial supply requirements ensure the comparator selection and sourcing strategy always aligns with the trial protocol and regulatory submission.

Women's Enterprise Business

At CSI, we have a clear strategy for DEI.

Our DEI strategy achieves a high level of Diversity (the D), adopting fair and equitable treatment for all people (the E) and Inclusion of everyone (the I), even in the most important decisions about the future of our organisation.

60% of our workforce are women. We are multicultural, multi-faith, speak a dozen languages and celebrate and respect our differences. But we all have a SINGLE goal: to serve our clients and accelerate drug development for the benefit of patients by providing gold-standard service in clinical trial supplies.