That's a very naieve view samuel if you don't mind me saying so. The police DO stop people they don't like the look of, I thought pretty much everyone knew that, but apparently not.
I am very much against this for multiple reasons, freedom, Police State all of the usual ones, but also for other reasons.
Where I live now, I'm nice and average, it's a small close knit community, we help out at the local village fete, you get the idea. I was stopped by the local police officer the other day and asked to prodce my licence and that was it, they gave me a bit of paper and I took my documents into the local police station. End of. That police officer was not given details of my previous criminal offences by some nasty little handheld computer. I have reason to very much wish to leave my past behind me (I'm not a paedohpile, rapists etc before you all wonder), but do have serious criminal convictions which I would not like a local police officer privvy to if I have done nothing wrong, as my family and I have to live in this community and I believe that it would negatively impact on their lives. I think it will, where ex offenders live in a community such as ours, be a terrible step backwards in their rehabilitation, and I find it unacceptable that ones identity can be called into question when you may have done nothing wrong at all, just have been stopped in a routine check. Give a dog a bad name as the saying goes.
I have said I will not have an ID card, and I won't. Nor if this travesty becomes compulsary will I continue to live in the UK. I feel very strongly we ae being terrified into relinquishing all our fundamental rights to peace and privacy.