Well I disagree, EVERY speeding ticket should be contested as a matter of fact, speed cameras are being used as revenue generators and are placed in places where there is not clear indication of the speed limit, as has been pointed out on this thread, police forces have the annoying habit of erecting cameras in a road That is DUE to have it's speed limit changed, therefore illegal, the amount of revenue created just from people as idiotic as yourself is staggering, even though you haven't actually broke the law.
My last one was for doing 42 mph in a 30mph zone, bollocks, contested and thrown, it was as I was coming towards a 30mph contra-flow on a motorway, was clearly signed and I was slowing down to enter it, the UNMARKED camera van was clearly outside the 30mph zone, I thought nothing of it until the fine landed on my doorstep, all it took was a request for the incriminating evidence which clearly showed me outside the coned lead in.
I wonder how much they made off fools like you, that just paid up without a whimper.