UK cannabis law changed in 2018 through the Misuse of Drugs Regulations 2001,...

https://lima-wiki.win/index.php/What_is_the_Simplest_Summary_of_UK_Cannabis_Law_After_2018%3F

UK cannabis law changed in 2018 through the Misuse of Drugs Regulations 2001, allowing specialist doctors to prescribe cannabis-based medicines. Despite this, cannabis remains a Class B drug for recreational use