I was followed today by a very aggressive driver who drove dangerously close to me for more than a mile through an area which went from 30mph, then 40mph, then 50mph. So as I increased speed he did too although I stayed at 40 in the 50 part due to how close he was behind as he would have had no chance in hell of not running into me should I have needed to stop suddenly.
In the past I've probably had a bit of a moan about it when I got home and then forgot about it. However I now have a rear window dash cam that's recorded all of this so was wondering if it's worth reporting the driver to the police.