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

https://wiki-dale.win/index.php/What_Are_the_Offences_for_Cannabis_Under_the_Misuse_of_Drugs_Act%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