Does Surveillance Invade Your Privacy or Preserve Our Public Safety?

The UK has one of the highest numbers of CCTV cameras of anywhere in the world.

Between 2012 and 2015 the city of London saw a 72 percent increase in cameras making Londoners some of the most closely watched people on the planet. Does all the cameras make for a safer city or does the widespread rise in CCTV represent a major invasion of people's privacy. 

To find out more, read the February issue of National Geographic magazine.