jinglej, I remember very low temperatures being recorded the last two winters in South Oxfordshire where, going by some of your references, I think you live. Likewise, just two miles from my home in Cheshire, the lowest temp was recorded last winter but one. My max/min thermometer bore this out. Yes, the Highlands of Scotland do have some very low temperatures each winter, but a lot of the country is coastal and these areas are usually a bit warmer, or, should I say, less cold. Bagitha, Gally and Em all live in coastal areas which may well be not quite as cold as RAF Benson.
I remember when we came home from Kenya, we went to stay with the in-laws in Kent. It was snowing and freezing - the wind seemed to come straight from Siberia but my MiL was concerned that we would be cold when we went to my family in Ayrshire for New Year. It was positively balmy by comparison!