Tustin, 32, was jailed for life at Coventry Crown Court on Friday, with a minimum term of 29 years, after being found guilty of his murder, while his father, Thomas Hughes, 29, was sentenced to 21 years for manslaughter.

Arthur’s maternal grandfather, Peter Halcrow, 61, told The Sun his killers should never be freed.

The review will now determine what improvements are needed by the agencies that came into contact with Arthur in the months before he was murdered by stepmother Emma Tustin at their home in Solihull.

Last night a source close to Mr Zahawi said it would also address the concerns raised by Dame Rachel, telling The Telegraph: “While it’s obviously independent, the review is going to look at ensuring social workers can spend as much time with children and families as possible.”

Mr Zahawi has commissioned four inspectorates, covering social care, health, police and probation, to carry out an urgent inspection of the safeguarding agencies in Solihull who were aware of Arthur’s case.

The National Child Safeguarding Practice Review Panel will lead the probe and provide additional support to Solihull Children’s Safeguarding Partnership to “upgrade” its existing local review, which was paused for the court case