One interesting one is that London appears to be the only city in England and Wales where the inner city has higher property values than the suburbs - but we already knew that - post-industrial urban rot is taking time to heal. This also illustrates the steady growth of conurbations as the author observes - the rich one in the south-east, and the poor one in the north-west.
Also - what on earth happened in London in January 2010? That's a "market adjustment" if I've ever seen one. Perhaps a single large landlord dumped their portfolio...
At this point, London may as well be a city-state enclave.