The NHS and social services staff did not take actions against non-accidental injuries of Baby P

The NHS and social services staff did not take actions against non-accidental injuries of Baby P. They did see the injuries but they did not share this information with safeguarding agencies like Police and child protection services. 
If they had raised their concerns, it was possible to save Baby P from getting more injuries and move him from his home. 
This informs our practice by making sure that we share our concerns with the safeguarding agencies and the appointed members of staff. We should not ignore when children come to the nursery with injuries on their body. It is possible that the injuries are accidental but there is also possibility that children have been abused and the injuries are non-accidental. 
Police did not investigate the boyfriend of Baby P’s mother who was living in the same house. 
If Police had investigated about him, they could have been able to know that he was not supposed to be there because he had been involved in the case of animal cruelty and abusing his grandmother. 
We should make sure that we clearly identify unsuitable people and report them before they cause any harm to someone.