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

https://brooksiwjk610.wpsuo.com/why-do-some-people-still-think-medical-cannabis-is-just-a-loophole

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 guidelines to support prescribing decisions