Born-again Christian activist Carl Hamblin protests outside the Houses of Parliament before a free vote on gay marriage, London February 5, 2013. British Prime Minister David Cameron is expected to see his ruling Conservative party split in two on Tuesday over his government's plans to legalise gay marriage, a move critics say is not a priority for the public and unnecessarily divisive. REUTERS/Chris Helgren (BRITAIN - Tags: RELIGION POLITICS SOCIETY)