A demonstrator holds a placard during a protest near the Britain's Houses of Parliament in central London February 2, 2010. Cadbury's workers gathered in central London to urge the British government to do all they could to protect Cadbury's UK workforce and investment at its British sites as they join with Kraft's 98,000 global staff. REUTERS/Toby Melville (BRITAIN - Tags: EMPLOYMENT BUSINESS CIVIL UNREST IMAGES OF THE DAY)