Medical cannabis has been legal in the UK since 2018, but it isn’t a first-line...

https://highstylife.com/is-there-a-safe-way-to-explore-cannabis-for-arthritis-without-buying-illegally/

Medical cannabis has been legal in the UK since 2018, but it isn’t a first-line arthritis treatment. Access requires a specialist assessment, usually through private clinics. If you're considering it, discuss your options with your doctor.