Since 2018, medical cannabis has been a legal treatment option in the UK,...

https://magic-wiki.win/index.php/Can_Medical_Cannabis_Help_if_My_Insomnia_is_%22On_and_Off%22_for_Months%3F

Since 2018, medical cannabis has been a legal treatment option in the UK, typically considered for insomnia only after conventional therapies haven't provided enough relief