In the UK, medical cannabis prescriptions require a thorough specialist...

https://rafaelsgreatinsights.cavandoragh.org/what-is-the-role-of-a-regulated-pharmacy-in-medical-cannabis-prescriptions

In the UK, medical cannabis prescriptions require a thorough specialist assessment, usually through private clinics since NHS prescriptions are very rare. If approved, medicine is supplied by regulated pharmacies to ensure safety and quality