Legal since 2018, medical cannabis requires a specialist prescription—usually...

https://shed-wiki.win/index.php/Can_I_Qualify_for_Medical_Cannabis_if_I_Had_Bad_Side_Effects_from_Meds%3F

Legal since 2018, medical cannabis requires a specialist prescription—usually after other options haven't worked. While technically available on the NHS, criteria are very strict, leading most patients to explore private access instead.