London is in a predicament. We're enjoying lots of 'healthy' development growth at the periphery, but one could argue we're denying the blemishes of the city that lie within a short distance from downtown. We focus on building new euphemistic neighbourhoods like Fox Field and Cedar Hollows to distract our gaze from other neighbourhoods with housing stock in need of serious repair. Regardless of how these new neighbourhoods turn out, the North American reality is that in other cities, similar communities - those cut off from public transit, characterized by homogenaic housing styles and income brackets - are failing fast.
Below - "The Disappearing Suburbs" info graphic offers some stats on American demographic trends.