From the bbc:
http://news.bbc.co.uk/1/hi/england/london/7728630.stm
An official inquiry into that case by Lord Laming made a raft of recommendations for child protection procedures, and the government has now asked him to check on their implementation across England.
The other inquiries are:
A government investigation of the role of all agencies in the case of Baby P, including the health authority, police and Haringey Council. The review by Ofsted, the Healthcare Commission and the Chief Inspector of Constabulary is due to make an initial report by 1 December
An "immediate independent review" announced by Haringey Council to examine its staff's actions and child protection across the borough
A review by the body that regulates social workers, the General Social Care Council, to look into potential breaches of its code of practice
Ok, so the police have to report too. But I still think it's social service who've had the bulk of the contact.
EDIT: Listening to the news on the radio this morning - social services visited the baby over SIXTY TIMES.