Even at 5mph over the motorway speedlimit in an attempt to get him to give me some space, the driver was basically up my backside for a good 10 minutes until I took my exit! I was in the left lane and there was plenty of space for him to overtake me if he had felt the need.
DH also said he was staring at me as I exited, and took his numberplate down. It was pretty scary to say the least (especially as I'm somewhat new at motorway driving) and if I'd had to brake we would have been smooshed 