Not reported when it happened, I wasn't quite sure what to do as it was in the middle of the night, but happy to report it today if it helps. I presume there is an online tool for reporting these incidents?

My own car did not get damaged so can't report it as damage to my own property (he happened to walk on the other side of the road on this stretch and whacked his backpack into the side of a neighbour's van instead), but hopefully I can still report it as vandalism to other people's property? Just hope this isn't going to become some sort of nightly activity or hobby for the chap. It looked pretty scary to watch as he clearly was quite aggrevated.