The FTSE 100 Index went up by 74 points or 0.69 percent on Thursday to close at 10831 points. The rise was led by London Stock Exchange (3.87%), Endeavour (3.83%) and Polar Capital Holdings (3.41%). On the downside, the weakerst performers were Reckitt Benckiser (-2.51%), Admiral (-2.49%) and Convatec Group (-2.14%).