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

https://wakelet.com/wake/gaHDPpB4XRPlwVc-8F_Am

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