With multiple parliamentary inquiries and a criminal investigation under way, the fallout over the PwC tax scandal continues. As part of the consulting firm’s attempts to rebuild its reputation, PwC has announced it will cease donations to political parties, but some parliamentarians say this doesn’t go far enough – calling on the government to impose a blanket ban on the big four consultancy firms. Reporter Henry Belot on what the PwC tax scandal reveals about the ‘cosy relationship’ between the government and the big four consulting firms, including millions of dollars worth of political donations