Theres a speed camera on the A5 in Warwickshire near Nuneaton. This actually has boards counting down how far away from it you are. if you get caught, you're an idiot!
I think speed cameras are great if they're outside schools or accident black spots that have accidents proven to be caused by speed.
Residential areas... if its a choice between a speed camera or a loads of speed bumps, i'll take the camera every day of the week!