Why not move over then?
Seriously nothing annoys me then following someone over a roundabout onto a dual carriage-way and they simply keep right when the left hand lane is clear. All because they want to turn right two miles down the road. So what if they are doing 50mph, 60mph or 100mph, GET OVER!
When I come off a roundabout I want to accelerate upto the speed limit or drive at the speed I wish to drive at and to have someone stay in the right hand lane when the left lane is clear is very annoying.
My car is pretty quick, but when I am coming over a roundabout I move over to the left lane and only use the right lane when overtaking, because sometimes there are cars or bikes quicker than me or who may wish to drive well above the speed limit and as I am not the law I move over and allow them to go on there way.
So how come you feel your in your right to hold them up?
My other pet hate is those who drive at 40mph everywhere, whether its a 30 zone or national speed limit zone, 40mph is not suitable for either and greatly annoying.