UK Stocks-Factors to watch on June 18

June 18 (Reuters) - Britain's FTSE 100 index is seen opening 10 points higher at 7,644 on Monday, according to financial bookmakers. * TESCO: The chairman of Tesco, Britain's biggest retailer, on Friday pledged to end the all-white make-up of its board of directors. * VIRGIN MONEY-CYBG: CYBG is closing in an agreement to buy rival Virgin Money to create a larger bank to take on Britain's biggest lenders, a source familiar with the matter told Reuters on Friday. * VEDAN