I think we need to temper the single pilot PPL(H) VFR debate a little. We don't know the pilot's background yet. While a businessman and flying PPL he may well have had significant experience, military training, IFR etc - we don't know yet. And also - even though I agree everything points to a weather related incident assumptions can be dangerous. There are many businessmen pilots (and commercial pilots) who take unnecessary risks - and likewise many who do not