A charity claims authorities in Cambridgeshire are failing to investigate enough reports of abuse of older people.
Action of Elder Abuse says the county council was among the bottom 10 authorities in the country when it came to acting on concerns - with just 14% of reports leading to a formal investigation.
The charity said reports ranged from beatings and theft to sexual assault and neglect.
Cambridgeshire County Council said it responded to each report in the most appropriate way.
It said it had 8,740 cases referred to it in 2016/17. Of those, 2,335 were deemed to require intervention and 1,235 - or more than half -were dealt with through a formal inquiry.
Where intervention was not thought to be needed, other services and agencies were contacted to provide help and support.
All reports are assessed by the council's "multi-agency safeguarding hub" which includes both council workers and police.
However, Action on Elder Abuse said if the same reports had been made elsewhere in the country, they would have received a more vigorous response.
Across the UK, an average of 41% of complaints are formally investigated.
The charity called on adult social services departments across the UK to take immediate action and ensure the help available was not only "an illusion of protection".
It is also campaigning for elder abuse to be classed as an aggravated offence, similar to hate crimes, which would mean tougher sentences for anyone convicted.