Medical cannabis has been legal in the UK since 2018. It requires a specialist...

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

Medical cannabis has been legal in the UK since 2018. It requires a specialist prescription, typically after other treatments have failed. While theoretically available via the NHS, most access is currently private. Speak to your GP first.