Labour’s sentencing reforms (Image: Getty) Killers, rapists, paedophiles and burglars will be able to walk out from prison early within months as Labour were accused of a “betrayal” of victims. The Ministry of Justice’s hugely controversial sentencing reforms received Royal Assent on Thursday, despite widespread concern from campaigners and families. Some 43,000 criminals will avoid jail altogether while many convicts will be out after spending just a third of their jail term in prison. And those sentenced to four years or more will only be let out after serving 50% of their sentence behind bars. The so-called “progression model” will come into force this Autumn. The MoJ insisted the changes were necessary to prevent prisons from overflowing. Justice sources told the Daily Express that, because the reforms apply “retrospectively”, thousands of criminals already behind bars will effectively benefit from shorter sentences. This means some rapists who would have been forced to spend two thirds of their terms in prison could automatically become eligible for release later this year. Criminals will be released in tranches because …