PwC is the latest Big Four firm to be questioned by MPs over its involvement with both Carillion and government.

Following the release of the National Audit Office’s report on government’s handling of Carillion’s collapse, the MPs running the inquiry into the firm’s failure have written to both PwC, who are acting as special managers to the liquidation, and David Chapman, the Official Receiver, hoping to clarify any double dealing.

The NAO’s report revealed government appointed PwC on 17 September last year to advise on contingency planning and dealing with the consequences of Carillion’s potential insolvency at a final cost of £600,000. Four months later, and 11 days before it collapsed, Carillion also engaged PwC to carry out operational contingency planning for the firm’s failure.