In 2018, UK cannabis law was updated through the Misuse of Drugs Regulations...

https://collinsexcellentblog.wordcanopy.com/posts/what-international-treaties-affect-uk-cannabis-law

In 2018, UK cannabis law was updated through the Misuse of Drugs Regulations 2001, allowing specialist doctors to prescribe cannabis-based medicines like Sativex and Epidyolex under Schedule 2 rules