Private equity firms are coming under pressure to consider longer-life funds, with more than half of investors believing they could be beneficial, according to an industry poll.

Just over half - or 52% - of 113 private equity investors surveyed for Coller Capital's Global Private Equity Barometer said the funds, which could last for much longer than a traditional 10 years, were a potentially valuable option for investors, while the remainder felt such funds were not suited to private equity.