In 2018, UK law changed the Misuse of Drugs Regulations 2001—not the 1971...

https://www.first-bookmarkings.win/since-2018-the-misuse-of-drugs-regulations-2001-not-the-1971-act-allow-1

In 2018, UK law changed the Misuse of Drugs Regulations 2001—not the 1971 Act—to allow specialist doctors to prescribe cannabis-based medicines like Sativex and Epidyolex