Since 2018, the UK has recognised medical cannabis as a regulated medicine...

https://juliet-wiki.win/index.php/Is_Medical_Cannabis_in_the_UK_Mainly_About_Regulation_Rather_Than_Lifestyle_Now%3F

Since 2018, the UK has recognised medical cannabis as a regulated medicine available by specialist prescription. Treatment follows evidence-based guidelines, including recommendations from NICE, ensuring safe and monitored use