dr henry marsh, it has been a pleasure. thank you. thank you very much indeed.te patchy, which makes it dangerous as well. and on top of that, we've got sub—zero temperatures. so that combination means freezing fog in some areas, and that, in turn, means that the roads could be some quite slippery. so really quite dangerous on some of those roads, if you are travelling in the early hours, and really throughout much of the morning, into the afternoon, because that fog will be stubborn to clear. this time of year, when there is no wind, the sun is low on the horizon, just can't work on that fog, it cannot melt it, as we say, away. this is what it looks like at 8:00am in the morning. you can see fog extensive across england, also the near continent there. temperatures down to —3 in some areas. now, the further north you go, we've got a bit more of a breeze coming off the atlantic here. so that means that that fog can't form, and there are also bits and pieces of light rain. fog doesn't like the rain, too. so for the western isles in the highlands, i think fog—free,