FTSE 100 slips, with miners, Glaxo in the red By: MarketWatch May 14, 2015 at 07:09 AM EDT U.K. stocks drop Thursday, with mining shares such as BHP Billiton suffering in London trade. Read More >> Related Stocks: Bhp Billiton Ltd ADR Glencore Plc Gsk Plc ADR Rio Tinto Plc ADR