Since 2018, the UK has allowed medical cannabis as a regulated medicine...
https://oscar-wiki.win/index.php/What_Does_%E2%80%98Evidence_Replacing_Assumption%E2%80%99_Mean_with_Medical_Cannabis%3F
Since 2018, the UK has allowed medical cannabis as a regulated medicine prescribed by specialists. Treatment follows clear, evidence-based guidelines set out by NICE to ensure safe and appropriate use