UK Stocks-Factors to watch on May 20

May 20 (Reuters) - Britain's FTSE 100 index is seen opening up 62 points, or 1 percent higher on Friday, according to financial bookmakers. For more on the factors affecting European stocks, please click on * The UK blue chip index dropped 112.45 points, or 1.8 percent, to close at 6,053.35 on Thursday after the disappearance of an EgyptAir flight and a drop in summer bookings for Thomas Cook weighed on the travel sector, while mining shares also dipped. * HSBC: HSBC Holdings Plc