Since 2018, medical cannabis has been legal in the UK, though it isn't a...

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

Since 2018, medical cannabis has been legal in the UK, though it isn't a first-line treatment for arthritis. Access requires a specialist assessment, often through private clinics. It’s worth a chat with your doctor to explore your options.