Since Nov 2018, medical cannabis has been legal, but it’s not a first-line...

https://highstylife.com/can-i-qualify-for-medical-cannabis-if-i-had-bad-side-effects-from-meds/

Since Nov 2018, medical cannabis has been legal, but it’s not a first-line treatment. You need a specialist prescription, typically only after other options haven't worked. NHS access is extremely limited, so many patients explore private clinics