Medical cannabis has been legal in the UK since 2018, but it is not considered...

https://wool-wiki.win/index.php/Can_Medical_Cannabis_Be_Used_Alongside_Physiotherapy_for_Arthritis%3F

Medical cannabis has been legal in the UK since 2018, but it is not considered a first-line treatment for arthritis. It is typically explored only after standard pain management options have been exhausted