The police seem to have a number of leads and as my car wasn't the only car damaged that hopefully means they have a decent amount of evidence to get someone. To be honest it's down to a quick thinking neighbour hearing what was going on and calling the police so quickly that they have managed to get on to things straight away.
I live right in the centre of town and unfortunately we don't have a drive or a garage. There is residents parking which is what I use, sometimes outside the house, sometimes along the road a bit, depending where I can find a space. I'm going to look in to renting a garage if I can find one near and which isn't stupidly expensive.
or even get a car cover mate... so the drunk fecking hooligans cant actually SEE your car... wish you luck man!