In 2018, changes to the Misuse of Drugs Regulations 2001 allowed specialist...

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

In 2018, changes to the Misuse of Drugs Regulations 2001 allowed specialist doctors in the UK to prescribe cannabis-based medicines like Sativex and Epidyolex. Despite this medical use, cannabis remains a Class B controlled substance for recreational use