Oxfordshire County Council may have understated the money it owes after the collapse of outsourcing giant Carillion.
The authority said it paid Carillion about £118.7m in its outsourcing contract from 2012 – until it terminated the deal with the company in December 2017.
Carillion collapsed a month later, meaning trouble for public services across the country as major infrastructure projects, including a new hospital in the West Midlands, were delayed.
Now auditors have told the council they believe it may be understating the amount it needs to pay, but also overstating the money it is owed by the collapsed firm.
Across the term of the contract, projects range from a value of £10m at Great Western Park in Didcot to £54 at St Mary’s Catholic School in Bicester. The FOI request notes a total of 599 projects were completed by Carillion or its contractors. The average cost of a project completed by Carillion was nearly £200,000, according to the figures.
