A HGV will use less fuel if the limit was raised, by doing this the driver is not changing gear as often, when the speed was 60 on Motorways you did not see the nose to tail like you see today & in turn putting the driver in a self inflicted dangerous position, for unknown few out there, its not the driver trying to wind you up by sticking to 40 on A>>B Roads, what that driver is doing is looking after his license! without this his job ceases to exist, thanks to the idiots in Brussels there will be continuous build ups of HGVs on the Motorway & coaches that were allowed to use the outside lane, now restricted to the indside & the overtalking lanes only " unless controlled otherwise".