The reason why 'chavs' are so noisy is because they are ignored, and / or ill-treated as children.
If you look at the average 'chav' toddler, ineraction with his/her parents is either non-existant, or consists of grunts, interspersed with shouts of "Get 'ere you little ...!"
They learn at an early age that no-one is listening to them or cares what they think and feel. This translates into attention-seeking behaviour and hyper-sensitivity to the notion of being 'dis-respected' by even a glance from a stranger.
Put money into nursery education, teach children a sense of self-worth and the ability to be nice, and you could erradicate 'chavs' in one generation.
Pardon Mr Brown? Oh yes, sorry, I forgot, you can't have an invasion force in other peoples' countries AND have a decently funded education system. What was | thinking of!