UK Stocks-Factors to watch on Jan 7

Jan 7 (Reuters) - Britain's FTSE 100 index is seen opening down 57 points, or 1.27 percent, on Thursday, according to financial bookmakers. For more on the factors affecting European stocks, please click on [ID: ] * The UK blue chip index FTSE 100 index closed down 1 percent at 6,073.38 points on Wednesday, as shares in commodity-related companies were hit by new worries over China, the world's largest consumer of metals, while North Korea's nuclear test added to investors' nervousnes