In the UK, medical cannabis prescriptions start with a specialist assessment,...

https://elizabethsbrilliantnews.almoheet-travel.com/how-does-a-regulated-pharmacy-supply-medical-cannabis-in-the-uk

In the UK, medical cannabis prescriptions start with a specialist assessment, usually at a private clinic, since NHS prescriptions are rare and tightly controlled. If approved, your medicine is supplied by a regulated pharmacy to ensure safety