HSBC knows, and they're telling. Among the trivia (43,000 new property millionaires in the last 15 years etc):

61% of £1million plus properties sold over the last 15 years were in Greater London. Kensington and Chelsea (18% of sales) and the City of Westminster (12% of sales) accounted for nearly half of all of London's £1million plus sales.

And:

The average house price across England and Wales has risen 213% over the past 15 years from £64,836 in 1995 to £202,813 in 2009 Q2.

Oooh, this has such a 2007 feel to it.

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