Chibi, check out the weekend section in the Telegraph for a good idea of 'middle class concerns'. Getting your children onto the best uni course. Finding the best au pair. Getting ahead in the property 'game'. Where to buy a second home. What to cook with fresh, seasonal produce bought from farmers makets and box schemes. Gap years. Where to eat, where to holiday, where to take short cultural breaks.
There's a great deal of wannabe simplicity. Like 'cool camping' under your Cath Kidston tent and 'downshifting' to a life of self-sufficiency (paid for by the income on your property portfolio of course).
The reality is that most of the middle class can't afford a great deal of this but often seem to get themselves ever deeper into hock in order to at least appear to have some of it.
Hmm, working class concerns. Getting a job, mostly, or getting your kids through school to the point where they can get a job (uni or no uni). Putting food on the table, affording treats like a holiday or days out, eating out sometimes. Buying things to last.
(very simplistic generalisations, sorry)
Incidentally, do we think there is such a thing as an underclass?