UK Stocks-Factors to watch on Mar 31

LONDON, March 31 (Reuters) - Britain's FTSE 100 index is seen opening between flat and 1 point lower on Tuesday, according to financial bookmakers. For more on the factors affecting European stocks, please click on * The UK blue chip index finished 0.5 percent higher at 6,891.43 points on Monday, taking its rise so far this quarter to 5 percent and setting it on track for its biggest quarterly gain in two years. * British consumer morale rose to its highest in nearly 13 years, beat