Another ray of sunshine appeared on Tuesday, when British Chambers of Commerce said the country is poised to expand at the fastest pace in five years in the third quarter. In its quarterly survey the BCC projects the economy to grow by about 0.9% and 1% between July and September- the highest rate since summer 2007. While official data will be released only on October 25, economists are constantly upgrading their growth forecasts in the wake of strong fundamental data and brighter prospects.