Severe cold weather is expected between 9am on Tuesday 24 January to Saturday 28 January across London.
Cold weather can be very harmful, especially for people aged 65 or older, or those with long term health conditions.
There are many ways to keep you and your family well this winter.
Read the advice from NHS central London Clinical Commissioning Group.
Read NHS tips and advice for more information.
Staying warm is one of the best ways to keep well this winter.
Please check up on friends, relatives and neighbours who may be more vulnerable to cold weather.
Cold weather is especially dangerous for older people or people with serious illnesses, so check in on them if you can.