Since 2018, medical cannabis has been available in the UK as a regulated...

https://delta-wiki.win/index.php/How_Do_Patients_Research_Medical_Cannabis_Without_Self-Diagnosing%3F

Since 2018, medical cannabis has been available in the UK as a regulated treatment prescribed by specialists. The National Institute for Health and Care Excellence (NICE) provides guidance based on current evidence to support safe and appropriate use