AIM-listed public relations firm Next Fifteen (LON:NFC) has seen its share price surge by 20.40% to 444.27p (as of 14:35 BST) following reports that revenues for the six months ended 31st July were up by 6.5%. Adjusted profits before tax increased by 16% and management said that, while they were cautious about conditions during the second half, results for the full year would be significantly ahead of expectations.