NHS Confederation: 'Unprecedented' pressures on A&E
8 September 2013 Last updated at 12:46 BST
England's accident and emergency departments are understaffed on average by nearly 10%, according to a BBC survey which found more than 1,200 vacancies for casualty doctors and nurses.
NHS leaders are also warning that emergency departments could reach breaking point this winter unless pressures on the service are addressed.
Mike Farrar is the Chief Executive of the NHS Confederation.