Maggie...from googling I find it is only planned for England...so far.
Don't have time to type everything from my leaflet but information which may be extracted from our medical records include: NHS number, DOB, Postcode, gender and ethnicity, medical diagnoses inc. mental health, family history, prescriptions, referral to specialists, body mass index and smoking and alcohol habits.
Those are between me and my GP....I don't want any Tom, Dick and Harry at university or in a commercial organisation clicking a button to access those.