Last year I wrote about how various police forces were spending thousands on the unmanned aerial vehicles (UAVs).
Their use in Iraq and Afghanistan has acted as a useful test bed for their deployment in the UK. While civil aviation rules still have some catching up to do it is likely that a quiet and, relatively, cheap bit of kit promoted as crime-fighting tool is unlikely to meet much public opposition. Of course the capabilities of UAVs (some serious snooping power) and worries about their reliability are unlikely to be highlighted.
The 2012 Olympics are probably going to see some stage managed use of UAVs to smooth their widespread adoption.