From the BBC:

CCTV cameras
There are around 4.2million CCTV cameras in Britain

"Talking" CCTV cameras that tell off people dropping litter or committing anti-social behaviour are to be installed in 20 areas across England.

They are already used in Middlesbrough where anyone seen misbehaving can be told via a loudspeaker, controlled by control centre staff, to stop.

Home Secretary John Reid has earmarked nearly £500,000 to fund the expansion.

Critics say the cameras are absurd and another example of excessive government intrusion into everyday life.

I stand with the critics on this one. :)