UK cannabis laws changed in 2018 with updates to the Misuse of Drugs...

https://www.click-bookmark.win/uk-cannabis-law-saw-a-key-update-in-2018-with-changes-to-the-misuse-of-drugs

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