Sorry to hear that, as you say its not the cost it just the damn cheek of it, and why?
Good news that you have the footage, lets hope the lads in blue decide its worth the effort......
Something similar happened on my drive a few months ago, very odd as where we live is a quiet private road with no passing traffic (in fact its at the end of two private roads) my Son's BMW was parked on our drive and we all went out for lunch in the Sexy Lexy, when we came back I immediately noticed the two large "parking buffers" on his front bumper were missing, he had not noticed them before....so checked my dash cam footage on the Lexus as we had reversed off the drive, sure enough the bumper was intact when we left and two hours later they had gone! Bare in mind this was midday spring weather and my neighbours are always outside doing something and we all know whats going on (its that kind of neighbourhood, friendly not nosey :D ) bit no one had noticed anything, most annoying. But a few weeks later my next door neighbour had the whole front grill of his Jaguar pinched off his drive as well.
Thankfully I now have a camera installed looking over the drives and nothing has gone missing since, shame we didn't catch anyone, as I said its the kind of neighbourhood where if caught doing that no one would find the body!
These scrots deserve the Arab justice....chop, chop....first offence, second offence just a slap on the wrist (stub) ;)