UK Stocks-Factors to watch on July 6

July 6 (Reuters) - Britain's FTSE 100 index is seen opening down 17 points, or 0.3 percent, on Wednesday, according to financial bookmakers. * The UK blue chip index closed 0.4 percent higher at 6,545.37 points on Tuesday, lifted by new measures from the Bank of England to prop up the economy in the wake of the country's vote to leave the European Union. * LSE/DEUTSCHE BOERSE:Deutsche Boerse signaled on Tuesday that the headquarters of the European giant to be created from its mer