UK Stocks-Factors to watch on July 26

July 26 (Reuters) - Britain's FTSE 100 index is seen opening up 16 points, or 0.2 percent, on Tuesday, according to financial bookmakers. * The UK blue chip index closed 0.3 percent lower on Monday at 6,710.13, with a fall in crude oil prices hurting energy stocks and weaker gold prices and negative company updates dragging down precious metals miners. * ROYAL DUTCH SHELL: Pilipinas Shell Petroleum Corp, a unit of Royal Dutch Shell Plc, is looking to raise up to 29.7 billion pesos