TC
chopjock: whats the lowest you can fly over a congested area in a single?
Other than the notified area in London, 1,000 ft above the tallest structure. Still plenty low enough to zoom in and read number plates and look for scrotes hiding under trees.
I'm aware that police operate under a special AOC. My point though is you can apply for an exemption to the ANO. Police aviation could be run much more cheaply and effectively than at present.