Medical cannabis has been legal in the UK since 2018 for specific conditions....

https://www.coast-bookmarks.win/since-2018-medical-cannabis-has-been-legal-in-the-uk-but-it-is-not-a

Medical cannabis has been legal in the UK since 2018 for specific conditions. It isn't a first-line treatment; consultants typically only consider it after standard therapies haven’t helped