There isn’t a fixed "conditions list" for medical cannabis in the UK....

https://blast-wiki.win/index.php/Can_I_get_medical_cannabis_on_the_NHS_or_is_it_mostly_private%3F

There isn’t a fixed "conditions list" for medical cannabis in the UK. Eligibility is determined by a specialist consultant, usually after you’ve already tried at least two first-line treatments without success