Why oh why do they do it?
I had a trip to Gloucester today & on the my return i was towing a Winch, which meant i was limited to 60mph & i couldn't enter the fast lane. Of course i caught up a middle lane hogger doing any thing between 50-60mph for i lost count of the miles, but she wouldn't pull in, so i had to break the law & enter the fast lane or under take her. It's bad enough towing a 2.5 tonne winch without having some stupid cow making it even harder.
So in the end i checked for plod, floored it & over took her giving her a hand single & horn as i went passed. She still mantained the middle lane for many miles until i lost sight.
If you're one of these people that do this & you read my post, please have some consideration for other's, there's not just YOU on the road.
That's my rant for the day 
This has been one of my pet hates for years!!

Before now I have raced up to their rear bumper, then raced past at high speed and, once almost past, signaled and cut right in to lane 1. Sometimes these unfortunate brain cell depleted people get the message and pull over!!
Grrrrrrrrrrrr

You have started my ranting Pete!
Mind you the worst was on the M5 travelling north towards Gloucester in about 1991 when I came across a Morris Minor being driven at 40 mph in lane 3!! As I sat behind him, trying very hard to get him to move over, I phoned the police.
Eventually it took a traffic car to undertake a massive queue of vehicles, and physically get in front of this chap, breaking him to a halt

. We were then waved through on the nearside! 8-) 8-)