Parliament's amendment to the Care Bill on care.data (Report stage is today) STILL says data will leave the NHS! But of course it will still be within the 'health service' so that's alright.
The amendment to the Bill says ...
"Care.data is a system being introduced by NHS England and the Health and Social Care Information Centre (HSCIC) to extract and link large amounts of patient data collected as part of NHS care in order to improve the delivery of healthcare and to benefit researchers inside and outside the NHS."
"The IAG meeting minutes indicate that HSCIC are planning a new extraction to identify all those who have opted out of care.data extractions - I would have thought this might be worthy of more publicity. Presumably those who have opted out wish to have their identity and information opted out of other HSCIC extractions?"
If you opt out of Level 1 and Level 2, I assume that your NHS number and practice ID must still be extracted from your practice system and uploaded so that you can be matched with other data (e.g.: HES) to stop all such existing data being shared outside of the HSCIC.