Since November 2018, medical cannabis is legal in the UK but strictly...

https://research-wiki.win/index.php/What_Information_Do_I_Need_for_a_Medical_Cannabis_Assessment_in_the_UK%3F

Since November 2018, medical cannabis is legal in the UK but strictly specialist-prescribed, usually after other treatments fail. While NHS access exists, it is very rare, leading most patients to private clinics