not sure as your on the other side of the pond.
they offer more grip in colder weather than summer tyres but do have a higher wear than normal.
if your spending a long time with low temps then it might be an idea to throw some on a spare set of wheels
OH well I live in Wisconsin. The temperature is usually around 20 degrees F. When it gets really cold it may drop down to negative 10 and max is usually around 30 below max. there are sometimes much snow but we have roads clear by trucks.