Since 2018, specialists can legally prescribe cannabis medicines in the UK....

https://source-wiki.win/index.php/Will_UK_medical_cannabis_become_part_of_mainstream_healthcare%3F

Since 2018, specialists can legally prescribe cannabis medicines in the UK. Patients access this via regulated clinics using digital onboarding and telehealth. Once an e-prescription is issued, medication arrives via tracked home delivery.