Sir David Nicholson has signed a wall at an NHS conference to "pledge to become a dementia friend," someone who is trained to help spot the early signs of the disease.
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The cold weather is set to continue over the next few days with further wintry showers and icy patches, particularly at night.
Some child abuse survivors say they received death threats after MPs published their details online.
Coronation Street has found another actress to play Bethany Platt, after a previous one was dropped for lying about her age.