FTSE 100 declines, but BG Group shares rise By: MarketWatch December 30, 2011 at 05:27 AM EST Britain’s benchmark stock index trades lower in the final trading session of 2011, but oil company BG Group scores early gains in London. Read More >> Related Stocks: BP Plc ADR Barclays Plc ADR Bhp Billiton Ltd ADR Royal Bank Scotland Group Plc