Phase I Clinical Trials CROs in United Kingdom

UK-based specialist oncology CRO providing early-phase clinical trial management, tumour genomics, and biomarker-driven trial design for immuno-oncology programmes.

UK-headquartered global mid-size CRO (now part of LabCorp/Covance) with deep expertise in oncology, rare diseases, and paediatric clinical trials across 30+ countries.

Mid-size global CRO acquired by Labcorp providing clinical development services from Phase I through Phase IV with operations across Europe, Asia, and the Americas.

Europe's first specialist CRO dedicated to psychedelic compound clinical research, providing full-service trial design and execution for novel psychiatric treatments in the UK.

Glasgow-founded, India-expanded full-service CRO providing clinical trial management, site management, and regulatory services across Asia-Pacific, Europe, and North America.

Global full-service CRO specializing in oncology, rare disease, and complex clinical trials across all development phases, with 2,900+ clinical research professionals operating in 100+ countries.

London-based early phase CRO conducting Phase 1 healthy volunteer and patient studies. Operates a dedicated clinical pharmacology unit at the Cumberland Business Park with 100+ bed capacity.

Next-generation decentralized CRO from London using a proprietary clinical trial platform to deliver faster, more efficient trials in cardiovascular, oncology, and ophthalmology.

One of Europe's largest full-service CROs with a dedicated network of research sites across the UK, conducting global clinical studies from Phase I through Phase IV with particular strength in patient recruitment.

UK-based Phase I-IV site network and CRO operating multiple dedicated clinical research centres across Northern England for healthy volunteer and patient population studies.

Translational pharmaceutics CRO integrating drug substance, drug product, and clinical testing in a single facility. Specializes in formulation development with integrated Phase 1 studies.

London-based Phase 1 clinical research unit specializing in early phase clinical trials, pharmacokinetics, and healthy volunteer studies. Located at Guy's Hospital campus.

Full-service boutique CRO with a purpose-built MHRA-accredited Phase I unit in South Wales. Specializes in early-phase clinical pharmacology, oncology, rare diseases, and respiratory conditions through to Phase III.

Welsh-based early-phase CRO providing Phase I clinical pharmacology, FTIH studies, and paediatric clinical trials with a 72-bed residential unit and dedicated bioanalytical laboratory.

World leader in human challenge trials for infectious and respiratory diseases, operating from a purpose-built quarantine facility in London with 14+ validated infection models for RSV, influenza, and COVID-19.