FTSE 100 loses ground on Imperial Brands' profit warnings

(Reuters) - UK shares fell on Wednesday after a previous two-day rally, as tobacco group Imperial Brands slid after sounding a profit warning alarm and the coronavirus epidemic kept investors on edge.The FTSE 100 lost 0.3% by 0805 GMT, after gaining more than 2% over the last two sessions when China announced stimulus measures, while the midcaps were flat. Imperial Brands , the maker of Winston cigarettes, fell 5.2% and was on course for its worst day in four months, after it warned on profit..