Legal since 2018, medicinal cannabis requires a specialist prescription,...

https://charlie-wiki.win/index.php/How_Do_I_Know_If_I_Qualify_for_a_Medical_Cannabis_Prescription_in_the_UK%3F

Legal since 2018, medicinal cannabis requires a specialist prescription, usually following the failure of standard treatments. While technically available on the NHS, access is extremely limited, so most patients currently use private clinics