(Corrects date in headline) LONDON, Aug 7 (Reuters) - Britain's FTSE 100 index is seen opening 4 points higher, or up 0.1 percent on Friday, according to financial bookmakers. For more on the factors affecting European stocks, please click on * The UK blue chip index closed 0.1 percent lower at 6,747.09 points on Thursday, weighed down by weakness in miners and insurer RSA, though it briefly rallied off lows after a broadly dovish update from the Bank of England. * B
