More like urban warming - they still happen in my home town, and just down the road. We even had one in East Ham about 5 years back. Beautiful it was. I still wore my sandals though. One of those days that is too beautiful to stay in during, but too cold to walk around without your eyes/ears/nose running, or that sudden urge that the cold brings on and you realise you can't undo your trousers with your gloves on......

LTS