Unseen London takes you backstage at some of the capital's great theatres, into the changing rooms of some of our greatest temples of sport, into the heart of the Establishment, the boiler room of the city's infrastructure and behind the scenes at some of the most opulent buildings in the Square Mile. Contents: Hidden Levers Tower Bridge Thames Barrier Abbey Mills Pumping Station Crossness Pumping Station BT Tower Battersea Power Station Disused Tube Station Law and Order Foreign Office County Hall Big Ben (plus Whitechapel Bell Foundry) Westminster Hall Churchill's Paddock Underground Bunker Old Bailey Wandsworth Prison Army and Navy Household Cavalry Hyde Park Barracks Household Cavalry at Horseguards Honourable Artillery Company (oldest Regiment in British Army) Old Royal Naval College Greenwich, remains of Greenwich Palace In and Out Club (Old Naval and Military Club) Chelsea Hospital home of the Chelsea Pensioners Backstage Her Majesty's Theatre The Palladium Theatre Royal Drury Lane BBC White City BBC Broadcasting House Abbey Road Studio Air Studios Alexandra Palace Body and Soul Queens Club Fulham Football Club Lords Cricket Ground Repton Gym Lambeth Palace St Brides the Journalist Church Greek Orthodox Cathedral New West End Synagogue Freemasons Hall The Square Mile Lloyds Register Midland Bank Bank of England Mansion House Guildhall London Metal Exchange Fishmongers Hall City of London School Billingsgate Roman Bath House