Burberry tumbles 18%, weighs on U.K. stocks By: MarketWatch September 11, 2012 at 04:37 AM EDT Burberry Group PLC leads declines for U.K. stocks on Tuesday after a profit warning, while miners also add pressure as most metals prices move lower. Read More >> Related Stocks: Barclays Plc ADR Burberry Group Plc ADR HSBC Holdings Plc ADR Rio Tinto Plc ADR