Since 2018, medical cannabis has been a legal, specialist-prescribed treatment...

https://quebeck-wiki.win/index.php/What_Does_%27Tightly_Regulated%27_Mean_for_UK_Medical_Cannabis_Access%3F

Since 2018, medical cannabis has been a legal, specialist-prescribed treatment option in the UK. It is rarely a first-line therapy; clinicians typically explore this route only after conventional sleep treatments have been exhausted