In the UK, there isn’t a fixed list of conditions for medical cannabis....

https://raymondnngc161.tearosediner.net/anxiety-vs-ptsd-are-clinics-more-cautious-with-one-than-the-other-in-the-uk

In the UK, there isn’t a fixed list of conditions for medical cannabis. Instead, a specialist doctor must assess your case, usually confirming you’ve already tried standard treatments without success