More people in London's Kensington and Chelsea describe themselves as working in mining and quarrying than in Gateshead, according to the census. The figures - 207 and 151 individuals respectively - are not large.
The decline of the coal industry in England and Wales has been well documented. About 2,000 people now work in coal mines, according to the National Union of Mineworkers, compared with the more than a million at the industry's height in the early 1900s.
The mining and quarrying industry as a whole employs 46,478, according to the 2011 Census, down 12,913 on 2001.
The area with the highest concentration of workers - 2% (and 3.8% of men) - is Redcar and Cleveland, home of the giant Boulby Potash Mine.
But there are surprising numbers of people in smart central London districts, such as Westminster or Kensington and Chelsea, who describe themselves as working in mining and quarrying.
They may work in management or for large international mining conglomerates such as Rio Tinto, which has its headquarters in London, says Paul Hardman of the NUM.
Another contributory factor may be the Royal School of Mines, part of Imperial College London. It is situated on the university's South Kensington campus and numbers about 350 undergraduates, 200 postgraduates, as well as lecturers. The majority live nearby, and some may class themselves as miners, a spokeswoman says.