The BBC's Mark Easton asks 'Why have the white British left London?'

Do read Mark Easton's piece all the way through but after reporting the headline news that:

'Something quite remarkable happened in London in the first decade of the new millennium. The number of white British people in the capital fell by 620,000 - equivalent to the entire population of Glasgow moving out.'

 Mark Easton concludes that 'It is a story of aspiration. It is a story of success'

Anybody care to fisk Mark Easton's article, I just don't have the time today?