Public Health England (PHE) has extended the cold weather alert until 9am Monday 11 January for all regions of England.
Severe cold weather will continue over the weekend with the severest conditions moving from the North to the West Midlands, East of England and southern parts of the country.
Very cold and frosty weather at night may persist all day with a risk of icy conditions in some parts of England.
Dr Owen Landeg, Principal Environmental Public Health Scientist at PHE, said:
As this cold spell continues, remember to look out for vulnerable neighbours and relatives.
Remind those who are frail, especially if they live alone or with a serious illness, to keep their homes heated to at least 18 Celsius, 64.4 Fahrenheit and to wear shoes with a good grip if they need to leave their home.
For those struggling to afford heating bills as this cold spell continues, Simple Energy Advice provides free advice on energy efficiency and national grants that could help you keep warm and well.