An "urgent" review of the NHS helpline in England will be carried out, after allegations that its service has been "chaotic" in some areas.
The 111 number has replaced NHS Direct, and emergency out of hours doctors' services in some parts of the country.
ITV News' Political Correspondent Libby Wiener reports:
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Prince William is set to complete his final air ambulance pilot shift before taking taking up royal duties full-time.