re:some perspective on biometrics
While it's true that some of the bio systems you mention are hard to compromise, you can bet your boots that our governement will buy the cheapest, shittest hardware / software systems they can lay their hands on.
Then they'll 'protect' it by making sure anybody can access it ('admin' and 'password' are tried and tested favourites) - this should save on costs a bit (especially if somebody forgets their password)
Then they'll give every public servant you can think of access whilst selling as much of the information as they can to companies (and remember, the NIR has been enabled with statutory instruments that will allow the home secretary to increase the amount of data collated about you with NO recourse to parliament).
Well come on - how else are you going to raise revenue when we've got no industry and are massively in debt?