UK has 1% of world's population but 20% of its CCTV cameras
Experts have called for a halt in the spread of CCTV cameras.
Britain is now being watched by a staggering 4.2million - one for every 14 people and a fifth of the cameras in the entire world.
The Royal Academy of Engineering also warned that lives could be put at risk by the lurch towards a 'big brother' society in which the Government and even supermarkets hold huge amounts of personal information on us.
It said any system was vulnerable to abuse - including bribery of staff and computer hackers gaining access.
