Since the financial collapse the 'Flat White Economy' has spawned four times more jobs than the City lost in the crisis. London is now growing one and a half times faster than Hong Kong as a result- a driving force behind this triumph of lifestyle and economics, being immigration. Leading economist Douglas McWilliams describes how this meteoric success, named after its favourite coffee and centred on East London, has swapped the City's champagne and supercars lifestyle for bicycles and boho flats and has become the prototype for digital cities around the world including the rest of the UK.