Ah, the nostalgia
When I lived down Cheshire way, around the suburbs of the suburbs of Manchester, "Townies" was a term for the teenage children of the wealthy who would spend all of their time wearing ugly but expensive clothing and pointlessly hanging around the town lying about how much beer they had 'necked' (in reality, almost none, since they were almost universally to stupid to produce or procure fake ID).
We called the unrepentantly nasty and violent scum "Scallies", which is Manchester proper terminology, and doesn't necessarily involve a shell suit. There was some crossover between the two, Cheshire being such a hotbed of social climbing, and not always in the upward direction. I spent many a fond Friday evening kicking these fuckwads out of my pub and into the car park, there to be administered a suitable kicking before being summarily bundled into the handily parked black mariah that used to frequent our car park. Ah Cheshire, how I miss your random pointless violence and criminally negligent police force.
Later (mid 90s) I moved to Newcastle, and discovered the term "Charver", which almost always involves a shell suit, cap, Elizabeth Duke at Argos bling, poor social skills, and teenage pregnancy. There is a guide to charvers, similar to the above mentioned sites at : http://www.newcastlestuff.com/charver/index.html
I would argue that at the time, the two were distinct, but they seem to have merged into one large and unpleasant subculture. If that weren't the case, Jeremy Kyle would have no audience.
Cattle prods and Landrovers, it's the only way.