The Royal College of Nursing's Janet Youd, a nurse consultant in emergency care, told ITV News, "My nurses are going home from the end of a shift in tears because we can't give the care that we want to give":
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Accompanied by the Duke of Edinburgh, the Queen will attend the opening ceremony of the fifth session in the Holyrood chamber.
Ms Leadsom has received the backing of Ian Duncan Smith, the former work and pensions secretary.
The former shadow work and pensions secretary is considered a more viable candidate than Angela Eagle, a Labour source has told ITV News.