What do we think here..
my belief is that its only a matter of time before this kind of thing becomes commonplace and not just used for tracking "known criminals" because with all of that data there already collected its inevitable that it will be used for monitoring/average speed....
although i have no issue with a nationwide anpr system for no insurance/MOT/ Tax checking with police patrols (so you can explain you're driving the car to an MOT test to a person as opposed to a faceless government dept) That i see as a good thing