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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Sixteen people were injured when a train crashed into a railway station buffer on Monday.
"Our ability to pre-empt or respond to threats will be eroded if we don't keep up with our adversaries."
"You are one of the silence breakers and we all owe you a debt of gratitude."