UK Stocks-Factors to watch on August 19 - Futures edge lower

(Adds futures, news) LONDON, Aug 19 (Reuters) - Britain's FTSE 100 index is seen opening down by 11-13 points or 0.2 percent on Wednesday, according to financial bookmakers. Futures were down 0.6 percent ahead of the cash market open. For more on the factors affecting European stocks, please click on * The UK blue chip index closed down 0.4 percent at 6,526.29 points on Wednesday, more than 8 percent below its record high of 7,122.74, reached in April. * Departing Ban