Actually I do disagree with the never-ending rise of CCTV. We're the most watched and most DNA sampled nation on Earth.

If we had tiny tiny crime figures that reflected such intrusion I might have more sympathy.

As to what the state can do with DNA. What can the state 'do' with any information it holds on its citizens?

The answer is, particularly with the lack of serious checks of balances we have in this country, increasingly whatever it likes.