An Arctic blast has plunged temperatures in the UK to nearly -8C, with warnings of significant snow and ice disruptions this weekend. Health alerts have been issued for the whole of England, with advice to stay warm as conditions worsen. Predictions indicate 20-40cm of snow could accumulate in northern England and southern Scotland, raising concerns for the elderly as winter fuel payment cuts come into effect. Local NHS services have urged the public to take precautions against extreme cold, which poses health risks, especially for vulnerable individuals.