UK Stocks-Factors to watch on Dec 16

Dec 16 (Reuters) - Britain's FTSE 100 index is seen opening up 22 points, or 0.4 percent higher on Wednesday, according to financial bookmakers. For more on the factors affecting European stocks, please click on * The UK blue chip index was up 2.5 percent at 6,017.79 points at its close, after eight straight sessions of falls, with supermarkets, commodity stocks and firms with South African exposure among the companies rebounding from recent weakness. * COPPER: London copper edged