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The Doctors Laboratory (TDL) is a fully CPA accredited (Clinical Pathology Accreditation), medically-led laboratory offering pathology services from our Central London and Manchester facilities.

Established in 1987, TDL is the largest independent provider of clinical pathology services in the UK and provides comprehensive pathology services to the Pharmaceutical, Biotechnology and Research community. TDL Trials is an experienced and dedicated clinical trials unit operated by a team trained to ICH GCP guidelines and principles, offering full project and data management support.

As part of Sonic Healthcare Ltd, TDL offers clients a solution for global studies.  Sonic is the world’s third largest international clinical diagnostics organisation.  With head quarters located in Sydney, Australia; Sonic employs over 20,000 staff across Australia, New Zealand, UK, Germany, Switzerland and the USA.