Since 2018, the UK has regulated medical cannabis as a prescription-only...

https://www.random-bookmarks.win/since-2018-the-uk-has-allowed-medical-cannabis-to-be-prescribed-by-specialists-3

Since 2018, the UK has regulated medical cannabis as a prescription-only medicine, available via specialist doctors. Treatment decisions follow evidence-based guidelines, with NICE providing advice on safe and effective use