Today the work and pensions committee will quiz partners of accountancy firm PricewaterhouseCoopers (PwC) about their role in the collapse of outsourcing giant Carillion, after being accused of attempting to “milk the Carillion cow dry”.

The committee said the correspondence between the Pensions Regulator and Carillion exposed the regulator’s weak position and the key role played by PwC. Most of the Pension Regulator’s negotiations were conducted via PwC, which advised Carillion’s directors on managing their pension liabilities from 2012 to 2017.

In the autumn of 2017, PwC became advisers to the pension scheme trustees; it was also advising the government on its dealings with Carillion. After the construction firm’s collapse on 15 January, PwC was appointed special manager, tasked with trying to salvage money for the Pension Protection Fund.