GlaxoSmithKline, easyJet drop in London By: MarketWatch January 20, 2011 at 04:45 AM EST U.K. stocks fall, with GlaxoSmithKline dropping after a broker downgrade and shares in low-cost airline easyJet slumping after a trading update. Read More >> Related Stocks: Barclays Plc ADR Gsk Plc ADR Lloyds Banking Group Plc ADR