A13 eastbound this morning, in the 50mph section around Thurrock.
A Ford Ka is doing 45-ish in the middle lane, so I pull out into the outside lane, just touching 50. A Citroen Picasso comes haring up behind, right on my rear bumper and flashing the headlights. God knows how far back he was when I pulled out because he certainly wasn't in my mirror!
Now, when I'm overtaking and there's not yet space to pull back in, then you're going to just have to wait. When I'm far enough in front of the Ka, I move back to the middle lane.
The Picasso then passes me, pulls right across in front, and slows down to about 47 or so. So of course, I pull out to overtake him again
He then realises that his junction is coming up, and has to then cut across the inside lane and the hatched line to make the slip road.
What's really annoying is that I haven't replaced my knackered dashcam and I can't prove what a complete and utter (expletive deleted) he was.