The idea of sending video clipe to the police is a good one, I have thought about it myself. But.
I asked a retired chief police inspector whether it was worth driving around with a camera on then sending any clips regarding driving offences in to the police.
He said in theory it would be a good idea, but in practice, the amount of video evidence they would get in including people just taking a dislike to other road users for no reason would be enormous. The police have so much on their plate nowadays due cutbacks in staff and all the paper work they have to do, they probably wouldn't bother with it all.