Just read about this today tbh. Not too surprised it's not well advertised, because it's not in the data-sharing programme's interests to have everyone opt out. Data is the new oil...
'Your medical records are about to be given away. As GPs, we’re fighting back': GPs in England have been told to hand over all patient data to NHS Digital – potentially to be exploited for corporate profit.
On balance, there is a myth buster on NHS Digital too: 'The national data opt-out is a service that allows patients to opt out of their confidential patient information being used for research and planning.'
Personally, I'm trusting the professional opinion of GPs who have a duty of care to their patients. If you've also read Ben Goldacre's book "Bad Pharma: How Drug Companies Mislead Doctors and Harm Patients" then you might understand why there's a legitimate concern; too many vultures seeking to make a quick buck at the expense of patients' misfortunes. It's a slippery slope. So, I'm opting out.
YABU - for not opting out
YANBU - for opting out