Medical cannabis has been legal in the UK since November 2018, though it is...

https://wiki-aero.win/index.php/How_Does_Medical_Cannabis_Eligibility_Actually_Work_in_the_UK%3F

Medical cannabis has been legal in the UK since November 2018, though it is rarely a first-line treatment. It must be prescribed by a specialist consultant, usually only after other licensed therapies have failed to manage your symptoms effectively