The innocent tot had suffered tremendously in his short life as he was physically abused and mistreated by his mother, Tracey Connelly, and her boyfriend, Steven Barker, with it later transpiring that the family had been known to social services and that social workers were aware that Peter was at risk yet did not remove him from the home.
When Peter died, it was found that he'd been suffering from a broken back and a broken ribs for days, if not weeks, before his sad death.
Understandably, this horrific case lead to an overview of social services, particularly in the London borough of Haringey, North London, where baby Peter lived - in fact, the issues that this case raised even made it to parliament.
Since then, there haven't been any other cases in the UK that have been as high-profile as Baby P, but why? Because the sad reality is that the mistakes made by social services, and the tragic deaths of innocent babies and children as a result, are far from extinct.
In fact, in the last couple of months alone there have been two cases that have turned my stomach and made my blood run cold and although they have made it to the National papers there hasn't been anywhere near the same amount of outcry and call for change as there was back in 2007, and I'm here to ask why.
Last month Kathryn Smith was found guilty of murdering her 21-month-old daughter Ayeeshia.
Ayeeshia's injuries were harrowing to say the least, with a judge suggesting that the baby's chest had been stamped on when she died in 2014. The little girl was heard begging her mum to "stop" by concerned neighbours and was covered in cuts and bruises that suggested that she was suffering at the hands of her mother for months.
The entire story is devastating, but what makes it all the more worrying is that Ayeeshia was known to social services and had previously been removed from her mother and placed in foster care, with social workers returning her to Kathryn just six months before she died.
In fact, just three weeks before she was murdered by her mother, Derbyshire social services had discussed taking Ayeeshia - not even two years old - back into care again.
So why didn't they? And why is more not being done to find out why these social workers left a vulnerable baby in such a dangerous environment? Where is the outrage that baby Peter, quite rightly, evoked?
Today Kandyce Downer was sentenced to a minimum of eighteen years in prison after being found guilty of murdering an eighteen-month-old girl, Keegan, last September.
Kandyce was made Keegan's legal guardian after she was removed from her birth mother shortly after birth and placed into foster care.
Detectives have said that Kandyce started brutally abusing the little girl three months before she died, with the tot dying from a combination of head injuries, blunt trauma to the chest, and septicemia.
Keegan had more than 200 external and internal injuries, including broken ribs and an untreated spinal leg fracture which would have left her in agony.
Let me say this again; she was just eighteen months old.
The NSPCC are calling for an investigation into why Birmingham's social services granted a Special Guardianship Order to Kandyce for Keegan, with the order meaning that the government would have been paying Kandyce to look after Keegan during this time.
But I ask again, why is this not bigger news? Why are the NSPCC calling for an investigation? Shouldn't one already be underway?
With Peter, the social workers responsible for leaving him in the care of his mother were named, shamed, and plastered over every newspaper in the country and I am not suggesting that this is the right thing to do but I can't help but wonder why nobody seems to care about the children who are being let down by social workers anymore.
When did we as a nation turn our back on the most vulnerable children in the country? Do we not have enough empathy to care about Peter as well as Ayeeshia and Keegan? And all of the other children who have tragically met a similar fate in this country?
It is always tragic and horrific and devastating when an innocent child is treated so inhumanely but it becomes even more difficult to comprehend when these children were known by social services and social workers sent them to their deaths.
These deaths can't just be a "blip" or a "statistic" that the social workers responsible "learn from"; these people have the most important job in the world and the fact that tragic incidents like this are happening more and more often suggests to me that there is a bigger issue that must be addressed.
Does the UK need to toughen up their recruitment process? Perhaps have stricter guidelines on what social workers should be doing? Does social services need more money invested in them by the government so that resources and people aren't stretched to the point that children get overlooked and, consequently, murdered?
Unfortunately, I don't have the answers. But I do have the questions; questions that I am amazed people haven't been forced to answer yet.
How many more children are going to be let down by the system and then get swept under the rug? Ayeeshia was placed in foster care, she was loved and cared for and treated well and then returned to her mother where she was abused and tortured to death.
On the decision of a social worker.
Keegan was removed from her mother, she had no choice about where she was placed. A baby too young to comprehend why she was being hurt, why the people who should look after her were instead abusing and tormenting her.
And she was placed there by a social worker.
When will enough be enough? And when will the nation start caring about vulnerable children with the same passion as they did in 2007? Something needs to be done before even more children die at the hands of those who should be protecting them.
