Since 2018, specialists have been able to legally prescribe medical cannabis...

https://www.cast-bookmarks.win/since-2018-medical-cannabis-has-been-legally-available-in-the-uk-via

Since 2018, specialists have been able to legally prescribe medical cannabis for insomnia when standard treatments fail. It is not a first-line solution and individual responses vary. Always consult your GP to ensure all NHS pathways are exhausted first.