A social worker from Kingston Council dismissed Asad Niazi showing his daughter pornography as “insignificant” and children’s service managers displayed a “low level vigilance” in the lead up to Charito Cruz’s murder.

Niazi had contacted the NSPCC three times before he murdered the 37-year-old Filipina carer – the last time just two days before the killing.

On the morning of the murder charity staff contacted Kingston social workers, saying the couple’s daughter was at risk of “significant harm” and there was “possible domestic violence” in the relationship.

But the warning was shrugged off as duty managers failed to investigate and displayed a “general low level of vigilance”, DHR author Davina James-Hanman said.

The report said: “Unfortunately it appears that NSPCC’s practice of requesting an initial assessment for every referral resulted in no specific consideration being given by [children’s services] to progression to assessment as a result of this request.

“This was not acceptable practice and has since been addressed.”