Since 2018, the UK has allowed specialist doctors to prescribe medical cannabis...

https://blogfreely.net/gertonmhvf/h1-b-how-can-i-explain-medical-cannabis-to-an-older-relative-who-remembers

Since 2018, the UK has allowed specialist doctors to prescribe medical cannabis under regulated conditions. The National Institute for Health and Care Excellence (NICE) provides evidence-based guidance to support treatment decisions