Depression

Being sleep deprived will lead to depression, and depression can send your normal sleep cycle out of whack. It is imperative that you get a good night's sleep. I have CKD (not on dialysis yet), and I take Lunesta. My mother is on dialysis, and she has been prescribed Ambien, so there ARE sleep medications out there that even dialysis patients can take. Research these two drugs on the internet, particularly Ambien. It's probably called something else in the UK. Don't let these NHS docs dismiss your needs so readily.

I know what you mean about simple chores becoming a real obstacle. Start with the garden. What you might need to do is re-do your garden in such a way that it doesn't require much maintenance. Pave the whole thing over if necessary, and set yourself up with a container garden if you really must have a garden.

I know that you can get counselling on the NHS. When I lived in the UK, my GP sent me to an "anxiety workshop" (I had just received my fsgs diagnosis, and shortly thereafter, I learned that my son was autistic); he also sent me to a psychiatrist in case I wanted to discuss anti-depressants. So, help IS out there, available on the NHS, but if your GP is not helping you in accessing this help, you may want to consider changing GPs.