Banks lift U.K. stocks after upgrade By: MarketWatch December 19, 2012 at 06:41 AM EST Banks lead U.K. stocks higher on Wednesday after a ratings upgrade, while oil and mining firms tracked most commodity prices higher. Read More >> Related Stocks: Barclays Plc ADR Bhp Billiton Ltd ADR HSBC Holdings Plc ADR Rio Tinto Plc ADR Royal Bank Scotland Group Plc Royal Dutch Shell Cl B ADR