Mandatory Credit: Photo by REX (3024169h) Prince William and Prince Harry take part in a trade BGC Annual Global Charity Day, London, Britain - 11 Sep 2013 Prince William and Prince Harry took part in trades at the BGC Partners trading floor during the BGC Charity Day 2013 at Canary Wharf today. The event is in memory of those who died in the World Trade Centre attacks and supports a number of UK charities. William and Prince Harry were involved in a number of multi billion Euro trades during the morning