Since 2018, medical cannabis is legal in the UK via specialist prescription....

https://fun-wiki.win/index.php/Why_Do_Clinics_Ask_About_Mental_Health_History%3F_A_Guide_to_Holistic_Safety

Since 2018, medical cannabis is legal in the UK via specialist prescription. Many people ask about eligibility, costs, and the actual consult process. Given that NHS access is limited, private clinics are a regular topic