Britain\'s economy grew at an accelerated pace of 0.6 percent in the second quarter compared with output in the first three months of the year, building on the country\'s recovery, official data showed on Thursday. \"Gross domestic product (GDP) increased by 0.6 percent in quarter 2 2013 compared with Q1 2013\" when output climbed by 0.3 percent, the Office for National Statistics said in a statement.