Oil rises as investors focus on Britain's EU referendum

By Karolin Schaps LONDON (Reuters) - Oil prices rose by up to 2 percent on Thursday, shrugging off a smaller than expected draw on U.S. crude stocks as money and equity markets firmed after the last sweep of Brexit opinion polls raised optimism over Britain remaining in the EU. Global markets, including commodities, have been on tenterhooks for weeks ahead of Britain's referendum on European Union membership on Thursday. Global benchmark front-month Brent crude was trading up 93 cents at $50.81