"For us to be able to safeguard both adults and children - so people that need extra support - we do need that wider bit for councils to do," said Williams, who also serves as corporate director of adult social care for Nottingham County Council.
Commenting on the report, Cllr Tim Oliver, chairman of the County Councils Network, said: "As we have warned, councils have little choice but to spend more and more on the most demand-intensive services, at the expense of everything else - leaving them providing little more than care services.
Most of this increased spending - £10.3bn - has gone to adult and children's social care, which represents councils' biggest spend, increasing as a share of overall spending from 53% to 58% over the period.
From bin collections and parks to social care, it's estimated local authorities in England provide more than 800 services for residents, touching on many different aspects of our lives all the way from childhood to elderly care.
"It is market-specific cost pressures, mainly in adult social care, children's services, and special educational needs, that are driving councils' costs rather than deprivation.
