Medical cannabis has been legal in the UK since 2018. It isn't a first-line...

https://doctiplus.net/arthritis-and-medical-cannabis-can-uk-patients-get-a-prescription/

Medical cannabis has been legal in the UK since 2018. It isn't a first-line arthritis treatment; you'll need a specialist assessment, usually via private clinics, after standard options fail. Always speak to your GP about whether it’s right for you.