You may have had a leaflet from NHS about sharing your medical records, or you may have recycled it as another piece of junk mail. Your records will be identifiable, they'll have your birthdate, postcode and NHS number. If you don't opt out by emailing or writing to your GP practice before end of March, your private medical records will be uploaded, shared and sold not only to researchers but private companies ie commercial insurance cos, pharmaceuticals, private care providers. Have a look at the flow chart which addresses issues not covered in the NHS flyer. sochealth.co.uk/2014/02/04/...
I emailed the following to my GP practice:
Re: Health & Social Care Act 2012
Please block the uploading of my personal and identifiable information to the HSCIC.