Risk of flaming here.....
I actually agree with the need for speed enforcement but only in certain conditions. Built up 30s. No need to speed here, it's just plain dangerous. Very bad junctions on high speed roads. The camera should be highly visible though as this would be a SAFETY device not a money maker.
That's about it actually.
I was done at 44 in a 30 just after a sign and it came from a national speed limit road (60.) My own fault but I did feel pi**ed off. As said above. I have no problem with a well placed safety camera but hate money making speed traps.