@lars
I'm not so sure that anyone who's given it any thought objects to the idea of an ID card per se. The objections have all been to the sheer quantity of data that would be stored on said card, that the user of said card had to keep it up to date with all kinds of stuff (and at their own cost as originally proposed) and under penalty if you fail to do so. This data included things such as your current place of employment.
As you rightly point out, most of us already carry multiple forms of ID, many of which are issued by Her majesty's gov and we do so happily.
So let's not get too carried away with comparing it to other European countries because they're are not the same thing at all.
There is also the prospect of feature creep, once a biometric card is mandated you can be sure that in a short amount of time (for our protection of course) it will become impossible to enter government buildings without producing it, not long after that it'll be banks and building societies... "Of course you can come in. simply swipe your card! For your own protection of course!" and from there it's a short step to logging everywhere you go in/out
I'm not saying it would happen but you can be sure someone will have thought about it.
Biting the hand that feeds IT
