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

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

Since 2018, the UK has regulated medical cannabis as a prescription-only medicine, available through specialist doctors. The National Institute for Health and Care Excellence (NICE) provides evidence-based guidance to support safe prescribing