So we are now at the stage where medical data can be siphoned off the NHS by companies. I also doubt it being anonymous because what's the point? You detect someone at risk but have no way of telling them. I don't see why you need to do this anyway, just send a questionnaire to the patient then doctor and add a score to determine risk. Job done.
What will they sell next? Police records to determine risk of re-offending? Parking ticket data to determine if someone takes risks? School records for employers? Welcome to the world of tomorrow where all your data can and will be used.