By Chris Hayward Together, London and New York can use financial and professional services to drive prosperity on both sides of the Atlantic, says Chris Hayward London and New York are the twin pillars on which the global financial system rests. The United States is our single largest trading partner, worth over £315 billion annually. Of that, over £120 billion is financial and other business services – generating jobs, creating business, and supporting public services. The City of London Corporation has been working with both governments to launch our new office in the United States. Our ambi…