As the country prepares for an arctic blast with sub zero temperatures, health services are sending out a warning.

More than 20 people are known to have died as icy temperatures continue to affect many parts of Europe, and now the snow is on its way to our shores.

Here in London, temperatures will drop as low as -1°C by Friday January 13 and will only reach as high as 5°C.

London Ambulance Service has warned those in the capital to ensure they wrap up warm and look out for vulnerable friends and family as the temperatures plunge.

Temperatures will plunge to sub zero

So here's a few tips from the NHS on how to keep warm and healthy in the cold weather:

  • Put the kettle on and have regular hot drinks and eat at least one hot meal a day. Eat regularly to keep your energy levels high.
  • Close your curtains as the sun goes down and close your doors to keep out the draught.
  • Rather than just one woolly jumper, layer up with two or three lighter layers to trap in warm air.

Drink plenty of hot drinks to stay warm
  • If you are heading outside, wrap up warm with a hat, gloves and a scarf and ensure you wear shoes with good grip so you don't risk slipping over.
  • Make sure you stay as active as possible in your home.
  • If you are over 65, have reduced mobility or have a health condition, you should set your heating to at least 18°C.
  • If you are under 65, active and healthy, it is safe to have your house cooler than 18°C, as long as you feel comfortable.

Cold weather can be extremely dangerous for older people, or those with a serious illness or heart and respiratory problems.

So make sure you check up on vulnerable neighbours, friends and relatives when the temperatures take a tumble towards the end of the week.

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