Yeah you need reindeer I reckonI'm really puzzled by some of the responses to my question. I do appreciate that some do not need tyres other than those that are standard, and I'm not advocating that everyone should either change tyres or come to the same conclusion as we have. Also, with the regard to whether the journey is necessary or not, that depends on many things, including such things as whether you have a shop to which you can walk, or whether you are happy for your business to close down in winter.
However, just to give some inkling of where different tyres can help, here is one part of the journey to the nearest village. The middle top shows where the road goes, and it actually climbs beyond that point. The road on the other side of that hill is quite significantly more steep. And that is a blind 90 degree bend at the top of the single track. When you're coming down there, even at slow speeds, and someone comes around unexpectedly (and as Terry Pratchett noted, million to one chances occur nine times our of ten) you really want to know your car will stop or at leats retain control. We have seen some shockers along that stretch of road, and seen cars unable to progress at all or which slide gently across to the ditch on the side. We do not want to be that car.