UK Stocks-Factors to watch on Feb 28

Feb 28 (Reuters) - Britain's FTSE 100 index is seen opening up about 5 points on Tuesday, according to financial bookmakers. * The UK blue chip index closed 0.1 percent higher at 7,253.00 points on Monday, helped by earnings updates and weak sterling, although motor insurers were hit by a regulatory change that could lead to higher payouts. * SHELL: A Nigerian court will rule on March 13 on a request by Royal Dutch Shell and Italy's Eni to lift the temporary seizing of a long-di