Since 2018, medical cannabis has been legal in the UK. It isn’t a first-line...

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

Since 2018, medical cannabis has been legal in the UK. It isn’t a first-line treatment and requires a specialist assessment, usually through private clinics. If you're exploring this for arthritis pain, chat with a professional first.