** FILE ** File photo dated March 3 2001 of cow carcasses waiting to be burned, following a foot and mouth outbreak. British authorities said Friday Aug. 3 2007 that cattle on a farm in southern England had been infected with foot-and-mouth disease. Prime Minister Gordon Brown chaired a meeting of the government's emergency committee, COBRA, by telephone on Friday night to discuss the development. Brown's office said he will return early from his holiday to chair another Cobra meeting at the Cabinet Office on Saturday. "Our top priority is to prevent the spread of this disease in order to protect farmers' stock," a spokeswoman for Brown's office said. (AP Photo / David Cheskin/PA)