An auditor has identified significant risks as it investigates the possible manipulation of accounts across Nottingham’s council-owned bus firm and a council-run charity that maintains Trent Bridge. Auditor Grant Thornton has been reviewing the council’s accounts over a number of years, alongside the accounts of any companies and charities it runs as part of a wider group audit. The financial accounts of councils are reviewed by private audit firms to ensure everything is in check, and is a legal requirement. According to an initial report, Grant Thornton says it has identified a number of “significant risks” that will require further investigation. A further significant risk was found in the “valuation of net pension fund liability” in NCT’s accounts.