The Duke of Cambridge has unveiled a plaque at London Bridge station to mark the official reopening of the transport hub after a £1 billion revamp. Prince William travelled by train to the station, where he was greeted on the platform by Transport Secretary Chris Grayling and Network Rail Chief Executive Mark Carne. Report by Khanomh. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn