In 2018, the UK’s Misuse of Drugs Regulations 2001 were updated to allow...

https://fast-wiki.win/index.php/Why_Are_Most_Medical_Cannabis_Prescriptions_in_the_UK_for_Unlicensed_Products%3F

In 2018, the UK’s Misuse of Drugs Regulations 2001 were updated to allow specialist doctors to prescribe cannabis-based medicines, like Sativex and Epidyolex