Since 2018, specialist-prescribed medical cannabis has been legal in the UK....

https://rapid-wiki.win/index.php/What_is_Releaf%E2%80%99s_Role_in_UK_Medical_Cannabis_Awareness%3F

Since 2018, specialist-prescribed medical cannabis has been legal in the UK. Patients use digital onboarding and telehealth consults to access care. If eligible, an e-prescription is sent for secure, tracked home delivery of the medication.