Consulting IMDiversity 2 years ago Comments Off on Concerns about the use of private consultancy firms advising government – such as PwC, KPMG, Deloitte and EY – has led to a Senate inquiry. 4.1 K Concerns about the use of private consultancy firms advising government – such as PwC, KPMG, Deloitte and EY – has led to a Senate inquiry.