In 2018, UK cannabis laws changed through the Misuse of Drugs Regulations 2001,...

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

In 2018, UK cannabis laws changed through the Misuse of Drugs Regulations 2001, allowing specialist doctors to prescribe certain cannabis-based medicines like Sativex and Epidyolex. Despite this, cannabis remains classified as a Class B drug for most uses