Medical cannabis became legal for prescription in the UK in 2018, though it is...

https://www.bookmarkpage.win/medical-cannabis-has-been-legal-in-the-uk-since-2018-but-it-s-not-a-first-line-1

Medical cannabis became legal for prescription in the UK in 2018, though it is certainly not a first-line treatment. For arthritis, doctors generally require you to have tried standard NHS therapies first