A Knightsbridge house could be tripled in size by drilling that goes 50 feet underground.
But the neighbours of the homeowner who wants to do this has aren't too happy, as Marcus Powell reports.
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The robbery is being connected to a spate of thefts in south east London.
Workers at two rail companies in the South East are to stage two 24-hour strikes
Eight cases of fraud and four possible thefts are being investigated, Scotland Yard said.