London\'s main share index rebounded on Thursday pushed by a positive opening on Wall Street.The benchmark FTSE 100 climbed 3.11 percent to 5,162.83 points.Lloyds Banking Group (LBG) remained the most traded blue chip with investors exchanging 223 million shares, closely followed by the Royal Bank of Scotland which saw 192 million shares change hands..Barclays finished top of the risers, up 8.64 percent -- or 14.15 pence -- to close at 177.85, followed by Essar, which ended the session up 7.94 percent -- or 20.80 pence -- at 282.9. Randgold was the biggest casualty, down 3.13% -- or 200 pence -- at 6185. BP was also under pressure as the beleaguered banking group saw its share price slump .05 percent -- or 0.20 pence -- to end the session at 396.60.On the currency markets, at 1710 BST, the pound was trading at $1.6227, up from $1.6134 at the same time on Wednesday, while it reached 1.11403 euros, up from 1.1380 over the same period.