So you refuse to exceed the speed limit...what could that mean?

First, cars in the UK must have their speedos adjusted to be optimistic about speed. That's the law. Typically, a speedo will show around 10% above your actual speed. If your needle is stuck on 30, you are doing 26 or 27.

Second, so many of the non-speeders don't drive AT the speed limit as shown on their dial: they drive BELOW the speed limit.

Third, if you're an absolute stickler for the speed limit, it could mean that you're obsessed with watching your needle instead of the road ahead and behind.

Fourth, look in your mirror. If you're dragging your heels with an impatient convoy behind you, pull over. That's the morally correct thing to do. If you don't, you simply don't understand the failings of human nature that could lead to a horrible overtaking accident.

Fifth, you're not a policeman (unless you are a policeman). You don't have the right to impose your moral high horse on anyone else. Pull over. End of politically-incorrect rant.