UK Stocks-Factors to watch on May 18

May 18 (Reuters) - Britain's FTSE 100 index is seen opening 51 points lower on Thursday, according to financial bookmakers. * BHP/ELLIOT: Activist investor Elliott Management on Thursday said a meeting with BHP Billiton Chief Executive Andrew Mackenzie in Barcelona on Wednesday had been "constructive". * BP: BP Plc's first foray into Mexico's recently opened energy market is proving more promising than expected, and the government should offer more big projects to lure investmen

by reutersCOMPANYNEWS via Endless Supplies .Biz - News