Driver was sat on the outside lane on dual carriageway doing under speed limit.
No one in front, no one on inside lane.
Stuck behind her for a while, gave her a nice flash to ask her to pull into the inside lane as there wasn’t any need to be in that lane.
I then went into the inside lane after being stuck behind her. She decided to speed up aggressively.
I went to the outside lane, and she then slams on the brakes.
She then decided to speed off aggressively, roughly doing 90mph.
I then catch her again later where she kept turning into my lane and she flipped me off with some hand gestures, and aggressively waving out of her window.
Curly haired brunette. Roughly 30 years of age. Got a very aggressive attitude, be careful.