Medical cannabis has been legal in the UK since 2018. Runners can access it...

https://www.foxtrot-bookmarks.win/medical-cannabis-has-been-legal-in-the-uk-since-2018-via-specialist-private

Medical cannabis has been legal in the UK since 2018. Runners can access it through specialist private clinics if specific conditions haven't responded to standard treatments. Note that it is strictly for therapeutic use