Since 2018, the UK has regulated medical cannabis as a prescription-only...

https://tiny-wiki.win/index.php/Why_Do_People_Still_Judge_Medical_Cannabis_Patients_in_the_UK%3F

Since 2018, the UK has regulated medical cannabis as a prescription-only medicine, available through specialist doctors. The National Institute for Health and Care Excellence (NICE) provides guidance to support evidence-based prescribing decisions