Black cabs, yellow cabs. Essex girls, Jersey girls. The City, Downtown. Loo, bathroom. Burberry, Ralph Lauren. Selfridges, Bloomingdales. The Shard, the Empire State B. Danny Boyle, Woody Allen. Boris Johnson, Michael Bloomberg. Oyster, MetroCard. Bond St, 5th ave. Victorian houses, skycrapers. The Queen, the First Lady. Tower Bridge, Brooklyn Bridge. The eternal duality of London vs New York.