UK Stocks-Factors to watch on July 24

(Adds futures, updates company news) LONDON, July 24 (Reuters) - Britain's FTSE 100 index is seen opening 28 to 29 points or 0.4 percent lower on Friday, according to financial bookmakers. Futures were down 0.2 percent ahead of the cash market open. For more on the factors affecting European stocks, please click on The blue-chip index closed 0.2 percent lower at 6,655.01 points on Thursday, hit by weak earnings reports from Aberdeen Asset Management and SSE. * GLAXOSMITHKLI