UK cannabis law changed in 2018 through updates to the Misuse of Drugs...

https://www.bookmark-friend.win/in-2018-uk-cannabis-law-was-updated-through-changes-to-the-misuse-of-drugs

UK cannabis law changed in 2018 through updates to the Misuse of Drugs Regulations 2001—not the 1971 Act. This allowed specialist doctors to prescribe cannabis-based medicines like Sativex and Epidyolex under Schedule 2