Could you not get that piece of information 'sealed' so no-one else can see it, Fakename?
Maybe. But to do that I would have to register with a GP draw attention to this particular entry, get the GP and probably a couple of other people to look at it, go in explain why I want it 'sealed' and hope they agree to do so, which they may not. It would be just like going in and waving it around for everybody to see.
I would also like to access health screening, I'm nearly 50, but it just seems impossible. I'm a big fan of the NHS, I actually think we have one of the best health services in the world and I think data sharing is very useful, unfortunately it NHS is really difficult for me to access.
I know it's no solution OP but maybe deregistering is the only way forward for you. You just have to accept that it will have very serious consequences for you and if you get any major illness it will cut your life short.
I think in some ways for me not having access to a GP may well keep me in better health. I have to be really careful not to get ill. Almost all of my family (not my DH or children) , my blood family, have lifestyle related illness. They are almost all very obese and have type two diabetes, nobody does anything about it, it could be cured if they lost weight, they don't, they just take medication and are closely monitored. I know if I put on weight I would get diabetes and am really, really careful not to do so and it is so hard. I can't afford to get ill like them though.