Since 2018, medical cannabis has been legal in the UK under specialist...

https://papa-wiki.win/index.php/Medical_Cannabis_for_Sleep_in_the_UK:_Understanding_the_%22Structured_Pathway%22

Since 2018, medical cannabis has been legal in the UK under specialist oversight. It is not a first-line treatment and should only be considered after other options have been tried. Experiences vary significantly between patients