In 2018, UK cannabis law was amended through changes to the Misuse of Drugs...

https://sethsinterestingthoughtss.evergrovio.com/posts/how-do-repeat-prescriptions-work-for-medical-cannabis-in-the-uk

In 2018, UK cannabis law was amended through changes to the Misuse of Drugs Regulations 2001—not the Misuse of Drugs Act 1971—allowing specialist doctors to prescribe cannabis-based medicines like Sativex and Epidyolex under Schedule 2