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

https://blogfreely.net/gertonmhvf/h1-b-if-i-have-a-long-term-condition-how-do-specialists-decide-if-cannabis

In the UK, medical cannabis prescriptions start with a specialist assessment, usually at a private clinic since NHS prescriptions are rare. If approved, you get medicines from regulated pharmacies, ensuring safety