In 2018, UK cannabis law changed through an update to the Misuse of Drugs...

https://www.romeo-bookmarks.win/in-2018-uk-cannabis-law-changed-through-an-update-to-the-misuse-of-drugs

In 2018, UK cannabis law changed through an update to the Misuse of Drugs Regulations 2001—not the Misuse of Drugs Act 1971—allowing specialist doctors to prescribe cannabis-based medicines