The Cadbury logo is seen behind barbed wire at the company's factory in Bournville, central England, November 9, 2009. Kraft made a formal but unchanged bid for Cadbury on Monday, leading analysts to predict the U.S. food giant was ready to play a long game in its unrequited courtship of the British confectioner. REUTERS/Darren Staples (BRITAIN BUSINESS FOOD EMPLOYMENT)