The 70 (or, where national is 60, 60) speed limit is one of laws that is universally broken: first that shows that the law is out of touch with reality, second, it creates, as I said, disrespect for many laws.

The reason the law is universally broken is that it is not enforced. When they did try to enforce it, the howls of "how dare they enforce the law on speeding" from the Daily Rant and their like caused the politicians to behave like cowardly pratts and back down, so the law is no longer enforced. The Daily Rant also has a campaign against average speed cameras because they work and motorists tend to stick to the speed limit where they are fitted. For some reason the Daily Rant seems to think that speed limits should not be enforced.