I agree with regards to the M25 cameras, as that's definately the easiest way to not get caught out, but when it comes to the regular GATSOs, half the issue is when the cheeky money-grabbing robbing basturds stick a 30 camera right after a 40 zone, where the change of speed signs are very poor and there's a camera carefully positioned behind some over-grown trees (see here for examples)... The little boy racers in their Corsas know where they are and just slow down - Then your otherwise innocent motorists get caught by genuine accident and are punnished for the scummy little chav tw*ts.