In 2017 the NHS was ranked as the most safe, affordable and efficient health service in the world by the Commonwealth Fund, a US based think-tank, while the NHS's own five year plan says that for every pound spent by the NHS, two pence is spent on administration costs.
A NHS Improvement spokesman said: "Research consistently shows that rather than having too many managers, the NHS actually has too few given the complexity of delivering modern healthcare. Many of these managers will also undertake clinical work.
"But this is not an either/or situation. The NHS needs world-class nurses, doctors and a range of support staff in addition to excellent management to provide the best care possible."
NHS Providers, which represents acute, community and mental health services, said the number of managers was still lower than at the beginning of the decade.
Deputy chief executive Saffron Cordery, said: "These figures take 2013 as the starting point, but this followed a huge shakeout of managers in the preceding years.
"The number of managers has started to recover, but according to the most recent statistics, the number of managers is still 13% lower than in May 2010."
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