"People have this idea that there's a problem in civil liberties with people having an identity card and an identity registered today when across all walks of our life this is happening."
Politicians just don't get this idea that it's not how necessarily much information is out there about you - it's about who has access to how much in one go. Yes, there are serious concerns abut publically-available information (via Google, for example), which need to be addressed. Gathering all the information together under the eyes of a pompous government isn't an "inevitable" step in the slightest.
Sainsbury's do not need to know how often I visit the Doctor's, just as insurance companies are not allowed to know the results of genetic tests for diseases. This is a much, much bigger issue than people realise, or that I have time for today. Maybe soon.