Brierley companies sue PwC over alleged 'wrong' advice Fri, 2 Jul 2021, 2:20PM The Big Four accounting firm denies liability in the case, which sees the Brierley group of companies seeking the potential value of tax losses. Photo / Getty Images Brierley companies sue PwC over alleged 'wrong' advice Fri, 2 Jul 2021, 2:20PM The New Zealand arm of PricewaterhouseCoopers (PwC) is being sued for $1.58 billion by members of the Brierley group of companies, which accuse the accounting firm of providing "wrong" advice. A High Court judgment this week, released to the Herald, outlines the litigation which stems from BIL NZ Treasury, GL Management PTE, GL and Brierley Holdings engaging PwC in mid-1998.