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

https://www.bookmarking-presto.win/since-2018-uk-cannabis-law-has-changed-under-the-misuse-of-drugs-regulations

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