BAGHDAD - A convoy of British diplomats and guards was blasted by a roadside bomb in western Baghdad on Thursday but the British embassy said no one was injured. “An incident occurred this morning involving British embassy personnel travelling outside the International Zone,” an embassy spokesman said in a statement. “There were no injuries.”Iraqi police sources said two people were hurt in the attack in the Mansour district. It is close to the International Zone, better known as the Green Zone, a fortified area that houses the British and US embassies and much of the Iraqi government.