AlQa'dah 4, 1434, Sep 10, 2013, SPA -- Britain's main share index rose to its highest level in nearly a month on Tuesday, bolstered by strength in the resources sector after an upbeat report from miner Glencore Xstrata and robust Chinese data, Reuters reported. Shares in Glencore Xstrata rose 3.3 percent to 331.4p after it upped its forecast for synergies from last year's merger to at least $2 billion for next year from initial guidance of $500 million, and hinted at further savings ahead. The mining sector was also boosted after stronger-than-expected industrial output reinforced other signs that China's economy is stabilising. The FTSE 100 was 48.08 points, or 0.7 percent higher at 6,578.82 by 1024 GMT, with basic material stocks, including miners and commodity traders, adding 12 points to the index.