Medical cannabis has been legal in the UK since 2018, but is strictly regulated...

https://www.pop-bookmarks.win/since-2018-medical-cannabis-has-been-a-legal-treatment-option-in-the-uk-yet

Medical cannabis has been legal in the UK since 2018, but is strictly regulated by specialists. Typically considered only after other sleep treatments fail, it isn't a first-line option. Experiences vary, so consult a doctor about your needs.