GuidanceMHRA
Clinical trials for medicines: International Council for Harmonisation (ICH) annotations
Information to help comply with ICH guidelines, if you are running clinical trials in the UK.
First published: Jan 12, 2026Last updated: Apr 27, 2026Changes: 3
Latest change: Added additional annotation related to Annex 1 2.3.2. The amended Clinical Trials Regulations took full effect on 28 April 2026. As such, this guidance should now be considered effective and is no longer in draft.
The full document, source attachments, and change history are available on KeyPedia. Sign in to view.