Clinical Trials of Investigational Medicinal Products (CTIMPs)

Last updated on 19 Nov 2025

Currently applicable legislation 

Legislation sets out how drug trials are approved, conducted, monitored and reported. 

Clinical trials regulations reform

The UK's clinical trials regulations are changing from 28 April 2026.

We have published guidance explaining what the changes are and what you need to do to be prepared.

Find out more.

Resources 

For those undertaking research in Europe 

Back to policies, standards & legislation