Intermittent start failure

Hi

Recently bought an astra elite 1.6 H/2009 model and after having it for around a month the car failed to start. It will pretty much start first time every time after being left over night but when driving throughout the day, if you turn it off you might not get it back on for the next 30 - 90 minutes. When it does fail, you turn the key, the dash lights up, fuel needle moves, no engine lights or anything and there is a click at the back where it sounds like it is trying to start but engine does not turn over at all. Any ideas as to what the problem might be?

Thanks

Rick