The mother of Baby P, the British toddler who died following a horrific campaign of abuse, has been jailed indefinitely by a judge.
The mother, who cannot be named, was branded manipulative, self-centred and selfish by the judge at the Old Bailey.
The sentencing comes as a damning new report said the youngster's death should have been prevented.
Baby Peter's 27-year-old mother, her 32-year-old boyfriend and a lodger, Jason Owen, 37, were convicted last year of causing or allowing his death in August 2007 at the age of just 17 months.
The toddler had suffered a broken back and over 40 serious injuries during prolonged domestic violence, despite being on Haringey Council's child protection register.
The mother was told she would serve at least five years in prison.
'You are a manipulative and self-centred person, with a calculating side as well as a temper,' Judge Stephen Kramer told her. 'I reject the suggestion that you were blind to what was happening in that house or that you were naive.'
In a statement read out by her lawyer to the court yesterday, Peter's mother apologised for her failings and said she punished herself every day.
However, the judge added: 'Your conduct over the months prevented Peter from being seen by social services. You actively deceived the authorities. You acted selfishly because your priority was your relationship with (the boyfriend).'
The boyfriend, who also cannot be named, was earlier this month also found guilty of raping a two-year-old girl, was jailed for life for the rape and told he must serve at least ten years in jail.
That sentence will run concurrently with a 12-year sentence he was given for his role in Baby P's death.
The lodger, Owen, was given an indeterminate sentence, with a minimum term of three years.
The news that the baby had suffered months of abuse, despite being regularly monitored by social services, doctors and the police provoked outrage from politicians and the British public.
