Legal in the UK since 2018, medical cannabis is not a first-line treatment and...

https://research-wiki.win/index.php/Medical_Cannabis_for_Sleep:_Are_Results_Immediate_or_Gradual%3F

Legal in the UK since 2018, medical cannabis is not a first-line treatment and requires specialist oversight. Patient experiences vary, though some report it helps them wind down or reduces night wake-ups