The review found examples of poor record keeping and failure to communicate by social workers, doctors and health visitors in the borough where Victoria Climbie died.
The boy, referred to as Adam in the report, suffered burns to 28 per cent of his body, but following an investigation was returned to his family.
But last week's overview panel report, chaired by NCH - The Bridge director Renuka Jeyarajah-Dent, highlighted problems with assessment, supervision and record keeping. The panel described social services record keeping as "particularly sparse".
After Adam was referred to social services by the hospital's accident and emergency department, following burns, both the health visitor and the social worker failed to add any new information to what was already known about the case.
The panel recommended that supervisors ensure that all social services assessments are completed satisfactorily, and that the primary care trust ensures that health visitors understand their role in a child protection inquiry.
They also called on the area child protection committee to ensure: information collated is always used when assessing a child's development; families are asked to describe in detail the practicalities of the children's care; housing and income are taken into account; and GPs' information is actively sought.
The team found that during the child protection investigation, there was no face-to-face contact with the parents for eight days, and there was limited time spent with Adam by social workers. The family's GP, who had considerable knowledge of the case, was also hardly involved.
Jeyarajah-Dent said: "This review has shown how good inter-agency communication is important for the children of an extremely vulnerable mother.
"Fewer agencies having more contact with the family and time for reflecting together potentially enables more change than a variety of agencies working in an unco-ordinated manner."
Anne Bristow, Haringey director of social services, said: "We have made immediate improvements to risk-assessment procedures for children of patients with mental health problems and in relation to joint-agency working and sharing of information.
"Also, we've begun to implement the report's longer-term recommendations, including setting up an inter-disciplinary working group to review and develop policies in relation to parents with mental health problems."
