UK Stocks-Factors to watch on Oct 31

Oct 31 (Reuters) - Britain's FTSE 100 index is seen opening 13-16 points lower, or down as much as 0.2 percent, on Monday, according to financial bookmakers, with futures down 0.2 percent ahead of the cash market open. * The UK blue chip index closed 0.1 percent higher at 6,996.26 on Friday, led by a rise in airlines following an earnings update from IAG, though banks were also in focus after a busy week of earnings that saw the sector hold near its highest level of 2016. * DEUTSCH