Since 2018, the UK has allowed medical cannabis to be prescribed by specialists...

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 to be prescribed by specialists under regulated guidelines. The National Institute for Health and Care Excellence (NICE) provides evidence-based recommendations to support safe use