In the UK, there is no fixed list of conditions for medical cannabis...

https://andreimgc701.cavandoragh.org/is-a-diagnosis-enough-to-get-medical-cannabis-in-the-uk-a-reality-check

In the UK, there is no fixed list of conditions for medical cannabis eligibility. Instead, access depends on approval from a specialist consultant. You generally need to demonstrate that standard, first-line treatments haven’t provided the relief you need