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

https://fast-wiki.win/index.php/Why_Are_Most_Medical_Cannabis_Prescriptions_in_the_UK_for_Unlicensed_Products%3F

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