Ian Paterson
Over two decades this surgeon mutilated women, in NHS and private hospitals.
https://www.bbc.co.uk/news/uk-englan...ngham-51369881
Patients were let down by the healthcare system "at every level" said the inquiry chair, retired Bishop of Norwich the Rt Revd Graham James, who identified "multiple individual and organisational failures".
Paterson carried out unnecessary operations, exaggerating or inventing cancer risks and claiming payments for more expensive procedures.
People avoided working with him, so must have had doubts.
In 2003, an NHS colleague first raised concerns, eventually, suspended eight years later.