I am aware of the law around overtaking on a motorway but would like to know if your correspondence that complained about ‘middle lane hoggers’ is referring to cars driving slowly or at the posted speed limit? It seems to me that on a motorway that has a number of roads joining from the left it it sensible to stay in the middle lane at the speed limit rather than keep moving from the left to avoid joining traffic which in itself can cause other problems/accidents. I am not suggesting travelling well below the limit in any lane but the left.