Leeds West MP Rachel Reeves made the comments while chairing a Business, Energy and Industrial Strategy select committee inquiry into the travel company’s failure.
She was quizzing PwC’s Hemione Hudson on a possible conflict of interest in its dealing with Cook’s accounts.
PwC audited Cook between 2007 and 2016, and was paid £1.8million for advising the Cook remuneration committee between 2007 and 2009.
Reeves said: “If the rules hadn’t changed, I put it to you that PwC would be doing exactly the same thing today as you did in the past and it is only because the rules have changed [that you don’t].
