Oil prices hit a record high a barrel on Friday as jitters over Nigerian oil supplies outweighed a rally in the dollar and fears of an economic slowdown in giant energy consumer…

Oil prices leapt higher on Thursday as concerns about tight supplies were stoked by news that saboteurs had blown up an Iraqi export pipeline, traders said. New York’s main oil…

Oil prices fell back below a barrel on Friday amid speculation that the Organisation of the Petroleum Exporting Countries (Opec) will decide to increase its output at a meeting…