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

https://xeon-wiki.win/index.php/Is_There_a_Clear_Set_of_Standards_Even_for_Unlicensed_Cannabis_Products%3F

In the UK, medical cannabis prescriptions start with a specialist assessment, usually at a private clinic since NHS prescriptions are rare. If approved, medicines come through regulated pharmacies to ensure safety and quality