And, of course, it's not as if the bad weather was unforecasted and unforeseen.
The snow arrived at LHR bang on schedule, at about 17:15 on Wednesday evening, just as the forecasters predicted.
It also froze hard. I walked out of CCO to my bike at 18:45 expecting just to sweep off a light dusting of feathery fluffy snow. The damn stuff was frozen pretty solid!
Mark.