Some of the most expensive housing in London is owned by people who aren&#x27;t British, aren&#x27;t resident, and don&#x27;t even live in the houses.<p><a href="http:&#x2F;&#x2F;www.theguardian.com&#x2F;society&#x2F;2014&#x2F;jan&#x2F;31&#x2F;inside-london-billionaires-row-derelict-mansions-hampstead" rel="nofollow">http:&#x2F;&#x2F;www.theguardian.com&#x2F;society&#x2F;2014&#x2F;jan&#x2F;31&#x2F;inside-london...</a>