Really annoys me this. Altho I do enjoy a moan at other road users. The main reason is people think it is the fast lane. Its the overtaking lane.
It annoys more me when people happily sit behind them. You end up about 10 cars back doing 50mph. What your supposed to do is a couple slow flashes of your lights as to not startle the driver. You then use had signals to direct the car over. You do this a couple times then pull back into the inside lane to let the next driver behind you try.
When people happily sit behind them they think its ok. if everybody on the road warned them they may see that it is only them in the wrong.
Lorry drivers arnt saints either. In many occasions theyve cut me up because they are doing 1mph faster than the lorry in front. Its bad for this in scotland as there are few three laned roads.