What lies beneath: the subterranean secrets of London's super-rich

Study exposes thousands of opulent basement schemes with cinemas, pools … and a beachThe subterranean secrets of London’s super-rich are revealed in a study of 4,650 basements granted planning permission in some of the capital’s most affluent neighbourhoods, with hundreds of swimming pools and cinemas in the most luxurious developments.Almost 1,000 gyms, 376 pools, 456 cinemas, 381 wine stores and cellars and 115 staff rooms, including bedrooms for nannies and au pairs, were f