Since 2018, UK cannabis laws changed through updates to the Misuse of Drugs...

https://www.booknose.win/in-2018-uk-cannabis-law-was-updated-by-changing-the-misuse-of-drugs

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