London bombing aftermath: new pressure for National ID cards?

Snipped from politech:

How soon till the proposed British National ID card is named as something that would have prevented today's bombings? And with all those CCTV cameras littered about London, where's the footage of the bombers? Is there none because the cameras weren't pervasive/invasive enough?

Link

Reader comment: an anonymous reader says, "How long? Less than 24 hours:

But the home secretary said on balance he believed ID cards would help rather than hinder the ability to deal with particular terrorist threats. He also suggested that in future civil liberties might have to be curtailed.

Link to BBC story.