In a way, yes
The various posters who have said unified ID is good have some valid points, but sadly, I don't hear the scheme being sold using these.
While uk.gov continues to tell me that ID cards will prevent crime and protect me from terrorists, their motives must remain suspect.
This is a bit like the whole Iraq Invasion problem. Knocking off Saddam might well have been an acceptable reason to go to war, but hostilities were initiated on the basis of some big porkies about non existent WMD. Curiously enough, this really pissed people off, and lost the gov the trust of the populace (what little remained, anyway)
So given the WMD lies, the entirely suspect and pretty much discredited reasons given for having ID cards, and adding in all the other totalitarian state bolt ons we keep seeing lately such as the removal of a right to trial, the removal of Habeas Corpus, the ability of the state to place you under house arrest even if a court finds you innocent of any charges, the removal of the right to legal representation, the ability of the police to detain you for long periods of time without even charging you, and so on, there remains a huge question of trust, or the reasonable lack thereof.
Additionally, the "wouldn't it be nice if..." crowd are missing the perhaps more central point that there is precisely zero possibility of uk.gov being able to manage a project of this size. without fucking it up really, really badly.
And as for this :
"The system works. There are no real data leaks, because they officially sell information, but only those that are public, like name, sex, birthdate and address. The data protection law is actually part of the current constitution, so this is legal."
I don't regard most of that information as being 'public', or being suitable for sale by the government to any interested third party.
(Although I am aware that it's to late to prevent it, see Experian et al.)