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

https://atomic-wiki.win/index.php/Can_Medical_Cannabis_Be_Part_of_a_Broader_Sleep_Plan_Instead_of_the_Only_Thing%3F

Since 2018, medical cannabis has been legal in the UK under specialist oversight. It is not a first-line treatment and patient experiences vary. Some report help with winding down before bed or fewer night wake-ups