Oh man, yeah chavs are a pain. Can anyone remember when they used to be called townies? They haven't changed since then. They still flock around mcdonalds and in the shopping centers, and unless your social group outnumbers theirs they hassle you and end up getting kicked out by security. Most of the chavs in my area are banned for life from all the shops and malls, and whenever they go in they get thrown back out again. Makes you wonder why they bother.
I remember one time when it was just me and a few friends out on the high street, and these chavs started following us around, asking us questions. Then they got on their mobile phones and called up their mates, trying to arrange a fight. That was some scary shit watching them gather, and they basically trapped us in the shopping center. I called up my dad's friend big harry, and he came over in his lexus, hopped out and just ploughed through this big group of chavs - was so funny. He was like pushing groups of five or more at a time to the ground, and they were running off like athletes.
Moral of this story; always stay good friends with big, musclebound hardarses, they're good for clearing chavs.