After jumping 0.9% on Monday, UK FTSE 100 Index retreated on Tuesday, as investors lost patience on lingering Greek debt swap agreement. UK benchmark fell 0.8% to 5,737.97, weighted down by financial shares. Royal Bank of Scotland dropped 4%, while Lloyds Banking edged down 4.2%. Essar Energy PLC was among few winners, fluctuating into positive area after the company reported its gas resources had been increased. At the moment of writing FTSE 100 is 1.02% or 59.10 points down at 5,723.45.