Capita, the outsourcing group, has admitted its running of the Civil Service Pension Scheme (CSPS) still falls short of the standards members and the government expect.
The admission came as the National Audit Office (NAO), the public spending watchdog, said it would review how the scheme is administered.
The review follows an earlier NAO investigation in June 2025.
Fixing the scheme remains the group's top priority.
Capita reported good operational progress across priority areas in August and September, following its half-year results on 4 August.
Further automation and tighter governance, including better management information, are being introduced to improve output and the experience of members.
The CSPS provides pensions for current and former civil servants.
Strategic supplier
As one of the UK government's strategic suppliers, Capita will cooperate fully with the NAO, the Cabinet Office and other stakeholders.
Strategic suppliers are the companies the government relies on most heavily to deliver public services.
The group pointed to a long record of working with parliamentary and regulatory investigations.
The NAO review forms part of the standard accountability arrangements for major public service contracts.
The watchdog checks how government money is spent and reports its findings to Parliament.
