Extract from http://www.odps.org/slangs.html

Scally, scallies n. (stereotype) Name for a person who wears lots of sports clothes, often Adidas or Nike, and tend to hang out on streets drinking cider and usually likes to listen to dance music., The scally is a generalisation and usually a degrading word, often the scally isn't aware that they are one, of will at least not admit to it (usually they're not the sharpest tool in the box so probably wouldn't realise anyway.

In the mid-seventies a hardcore group of Liverpool supporters followed the team into and all over Europe. Along the way they stole and robbed from many sports goods stores. They brought these goods back to sell and wore them too. Hence the beginning of the `scally´ football fashion which began to spread nationwide in the very early eighties. Regional variations on the word to describe football supporters are easy to give: Manchester, Perry boys; SE, Casuals; Sheffield/ Yorkshire, Townies or Trendies. This most underrated of scenes eventually spliced into the warehouse party scene. The etymology of the word itself can be guessed at by looking at a word which covered the same meaning on Merseyside with an older generation. 'Buck´ or ``Bucko´ meant a young man who was wild and in trouble with the police for relatively petty offences. Its precise etymological history is Irish, brought over by the wave of immigrants into the area. The word is still used by Merseyside Police as a slang term to describe a young male offender of repute. This definition mirrors the meaning of `scally´. Which as a word again has Irish origins.

Extract from http://www.odps.org/slangc.html

Charver, Chava adj. 'He's a right little Charva'. Used to describe group of youths usually described as 'townies' or 'kappa slappers' else where. Charvas typically wear things like Kappa tracksuits and Berghaus jackets, smoke Lambert and Butler cigarettes amongst other things, have hooped gold earrings, spit constantly and wear at least one gold sovereign ring (a gold band attached to the bottom of a gold sovereign coin) on each hand. Most people seem to grow out of 'charvadom' by their early twenties, although may still carry a few of the habits through to later life and will by then probably drive a souped-up XR2I, with blacked-out rear windows and a 5000 watt stereo system. Another trait common to the charva is a loud, slightly sarcastic, nasal laugh and slow 'can't really be bothered to talk' speech. Typical slang words that Charvas use are 'belta', 'mint' and 'waxa' all meaning good or great, with the prefix of 'pure' or 'total' this would mean really good (I couldn't be bothered to send separate entries for these words, sorry). The word charva has been in common use in the North East since the mid-nineties.

Another submission on this word goes as follows:
In current usage here in Kent - primarily by teenagers as a term of abuse - as in "he's a right Chav." Describes someone who wears Reebok or Adidas trainers, gold jewellery and is likely to be a shop lifter. Girl Chavs wear big gold hoop earrings and like pop music (as opposed to rock, metal, grunge etc.) , Would be very interested to hear any feed back on this as this one word has made me feel like a very out of touch parent!! My daughter was bought an Adidas bag which she refused to use for fear of being called a "Chav". She then gave me the above description, and other teenagers I've asked have given the same with little variation.