I think you've really "got" Mashton's point here, and it's nice that you've elaborated on it. I'd go even further - it's not just graduates, even solidly middle class six year olds are also often priced out of the housing market, given the crazy disparity between current levels of pocket money and mortgage deposits.
And those aristocrats... it must be horrible to live a hand-to-mouth existence, renting space in a crumbling stately home from Britain's ultimate slum landlord, the so-called National Trust. :(
Ha! and rep.