UK cannabis law changed in 2018 with an update to the Misuse of Drugs...

https://www.seo-bookmarks.win/in-2018-uk-cannabis-law-changed-through-an-update-to-the-misuse-of-drugs

UK cannabis law changed in 2018 with an update to the Misuse of Drugs Regulations 2001, not the older 1971 Act. This allowed specialist doctors to prescribe cannabis-based medicines listed under Schedule 2