Sorry you're having some problems Paul - I have come across one or two others with similar problems - sad to say their nutrition is mostly/all of a liquid nature.
I agree - post cancer care (after RT etc) - especially a few years or more down the line - can be piss poor. No real help is/can be given.
It appears we have to live with it.
I now suffer from some terribly painful spasms/cramps in my muscles under my jaw. (RT related). I get NO HELP whatsoever.
Current state of the NHS - shit!