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

https://mill-wiki.win/index.php/What_is_meant_by_cannabis-based_medicinal_products_(CBMPs)_in_the_UK%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