Medical cannabis has been legal since 2018, though it isn't a first-line...

https://yenkee-wiki.win/index.php/What_is_the_difference_between_medical_cannabis_and_CBD_in_the_UK%3F

Medical cannabis has been legal since 2018, though it isn't a first-line treatment for arthritis. Access requires a specialist assessment, typically through private clinics, as NHS prescriptions are rare. Please discuss options with a professional.