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A nurse who tried to raise the alarm more than 100 times at Mid Staffs and went on to be a key witness in the subsequent Francis inquiry has called for failing NHS managers to be struck off. Helené Donnelly told Newsnight that a decade on from one of the worst failings in NHS history, those raising concerns were still not being listened to. She was speaking in response to a Newsnight investigation into the treatment of whistleblowers at Manchester’s world-renowned Christie cancer hospital. David Grossman has this investigation. Produced and edited by Sean Clare