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.
More top news
Darth Vader actor David Prowse has reprised his role as the Green Cross Code Man - 40 years after the original campaign ended.
The TV chef claims his father-in-law "forged" his signature to make him personally liable to pay £640,000-a-year rent on a pub.
Rain is forecast to hit most parts of the country this evening with a weather warning in place for Northern England and southern Scotland.