Thanks for your helpful comments folks. On reflection, I think I was a bit tired after a late night up with my young son and a bit stressed out awaiting the results of an interview at work, not to mention the weather.
Whirly, I was very interested in your experience. I hope I develop that kind of intuition too!
Anyway, just back from a short holiday. Booked to fly next Friday, so here's hoping!
HH