The UK Health Security Agency has issued an amber alert for all of England from midday on 2 January to midday on 8 January.
Colder temperatures can have a serious impact on the health of people aged 65 and over and people with pre-existing health conditions. The agency has published guidance for the public on staying safe during periods of cold weather.
You can also visit the NHS website for advice on keeping healthy this winter.
It is a good time for everyone to check in with friends, family and neighbours to make sure they have enough food and medication and can keep warm.