Regular Good Morning Britain guest Dr Hilary returned to our screens on Wednesday, during a segment about today's ambulance strikes.
Richard Madeley and Susanna Reid were joined by the TV doctor, as thousands of ambulance staff in England and Wales will walk out in an ongoing dispute over pay. It comes after talks between the government and unions were unsuccessful.
Those walking out include paramedics, 999 and 111 call handlers and drivers.
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Richard asked Dr Hilary who is "allowed" to call 999 today, with so many staff members taking industrial action. The doctor replied: "It's very difficult for people to decide that for themselves, if you've got a life-threatening, life or limb, situation then your advice is to call 999 as usual.
"Or, if you can't get through because call handlers will be on strike too, then you're meant to phone your GP or your pharmacist. This is unrealistic, your GP isn't going to be able to help you in an emergency, nor is a pharmacist."
He then said the usual "protocol" for NHS 111 will be "torn up" today. Dr Hilary added: "For people at home today, what they've got to decide is, is this something that means they cannot move?
"Or can they find a car to get them to hospital under their own steam, because it could take several hours to get an ambulance, even if you've had a stroke, even if you've had a heart attack."
Good Morning Britain airs weekdays from 6am on ITV and ITVX
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