Our trip to Blighty was blighted by the big chill. Before our exodus, I could count on the fingers of one hand the number of times I’d experienced snow in London with its urban microclimate. In fact, three of our four last winter tours have been a white out. Perhaps global warming really is pushing the Gulf Stream out of kilter. What next, winter fairs on a frozen Thames? Shocking. Fortunately, we landed at Heathrow just before the weather closed in. Two years ago, we were diverted to Cardiff by a light dusting at Gatwick.