UK markets fall on Christmas eve, no Santa rally in sight

(Reuters) - British shares dipped on Monday as world stocks fell on reports that U.S. President Donald Trump privately discussed firing the head of the Federal Reserve and a partial U.S. government shutdown.The FTSE 100 was down 0.5 percent and the mid-cap index was 0.8 percent lower, setting a bleak tone for a holiday-shortened week.Weakness in the dollar weighed on companies with a greater international presence, making them the biggest drags on Britain's main index . HSBC slipped 1.1..