Medical cannabis has been legal in the UK since 2018 for specific conditions....

https://www.bookmark-fuel.win/medical-cannabis-has-been-legal-in-the-uk-since-2018-though-access-remains-a

Medical cannabis has been legal in the UK since 2018 for specific conditions. Getting a prescription requires a specialist assessment of your health. You will need clear records showing at least two past treatments were ineffective