Outside our local school there are the usual yellow zig-zags and opposite there are double yellow lines. Since the start of the new term there have been about 4 cars persistantly parking all over theese to pick their kids up. One of the mums takes their registrations, and passes them onto the police (who do nothing) but today one guy saw her taking his number and leaned out of the car to yell 'wot you doing'. when we said he is parked illegally and endangering the kids who cross the road, he said 'oh i'm only picking up my little kid' (we, OTOH are having a coffee morning?) and we had a bit of a slanging match. He didn't move tho. We asked the headteacher to come out (he's a big lad) but he turned up about 15 minutes later, when all the cars were gone. What can we do?