The murder of Isabelle Welsh has prompted national outrage and raised serious questions over safeguarding decisions and police actions.
Isabelle Welsh was ‘an innocent child who should have been safe and happy at home. The pain and suffering she experienced at the hands of Walker and Simpson was sickening.’ The words of Detective Chief Inspector Steve Chatterton capture the profound brutality of a case that should never have happened.
Isabelle was just two years old when she was killed by her parents, Alexandra Walker, 26, and Harrison Simpson, 22. The toddler collapsed at her home in Teesside in September 2025 after suffering a catalogue of violence – a period of abuse that left her with extensive bruising and 21 broken bones.
Last week, the couple were convicted of murder and child cruelty following a trial at Teesside Crown Court. Simpson was also charged with sexually assaulting Isabelle before her death, though Walker was cleared of this.
The pair have been sentenced to life imprisonment, with minimum terms of 28 years and six months for Simpson and 22 years for Walker, both minus time spent on remand. Despite receiving punishment, Chatteton added: ‘There are no winners.’
He said: ‘Whilst [the] sentence cannot bring Isabelle back, justice has been served and it does ensure that Walker and Simpson will spend many years behind bars for the unimaginable suffering and torture they have caused.’
The contacts before Isabelle’s death
Chatteton’s notion that are no winners is incredibly apt. Details first reported by The Times show safeguarding services were involved in Isabelle’s case just weeks before she died. A local safeguarding hub, which is run by the council, was in contact with Welsh and her mum on two occasions in the four weeks before her death, but both times resulted in no further action.
On one occasion, a health visitor checked on Isabelle four days before she was killed but did not go into the family home, instead they chose to do it over the phone.
‘In any event, without actually visiting Isabelle or checking on her welfare, the health visitor concluded the call and noted that she had no concerns,’ Richard Wright KC, told the court for the prosecution.
Following Isabelle’s death, a safeguarding partnership, which is run by Hartlepool and Stockton-on-Tees councils, conducted a rapid review – a process used when a child known to authorities suffers serious harm or dies. It concluded the decision not to progress the two previous contacts involving Welsh had been ‘appropriate with hindsight’.
Meanwhile, The Times has also reported that since 2019, the safeguarding partnership has conducted 30 rapid reviews. In 15 cases, the child was killed, while in 18 cases the child was under the age of three.
Police failings
Scrutiny has also fallen on Cleveland police after the force admitted officers failed to execute a warrant issued for Simpson’s arrest in March 2024, 18 months before he was convicted of murdering Isabelle.
The warrant was issued after Simpson failed to attend court for breaching a non-molestation order, a legal protection designed to prevent harassment or threats towards victims of domestic abuse. It is understood the order was in place after reports that Simpson had harassed and threatened a woman.
In a statement, Cleveland police said: ‘Multiple inquiries and arrest attempts were carried out to try to locate and arrest him, but these proved unsuccessful.’
The force added: ‘We recognise the time Simpson had an outstanding arrest warrant is far from adequate. A review of this was immediately conducted upon his arrest for murder.
‘This review, along with a determination to continually improve our processes around suspect management, has led to a number of recent changes, such as ongoing improved visibility across the force around outstanding warrants, a comprehensive data system which tracks all outstanding warrants, and stringent oversight including a governance group led by a superintendent.’
‘We can all play a part in keeping children safe’
Since Walker and Simpson were sentenced, campaigners have paid tribute to Isabelle, while renewing calls for stronger safeguards to help prevent similar tragedies in the future. Unfortunately, this isn’t the first case involving the death of a child we have reported on. Last June, Blackpool teacher Jamie Valey was charged with the murder of 13-month-old Preston Davey, whom he was in the process of adopting.
A spokesperson from NSPCC told us: ‘This is an incredibly distressing and heartbreaking case. In the final weeks of Isabelle’s short life, she was sexually abused by Simpson and subject to a series of violent assaults by both him and her mother, the very people who should have been protecting her from harm.’
‘When a child dies in such devastating circumstances, people inevitably ask how such a tragedy could happen,’ they added. ‘While Walker and Simpson are responsible for Isabelle’s death and have now faced justice for their terrible crimes, it is vital that any potential learnings are identified and acted upon to help prevent future tragedies.
‘We can all play a part in keeping children safe. That means trusting our instincts, asking difficult questions and taking action when something does not feel right.’
Chatterton said that this case has been, ‘without a doubt, one of the worst cases my team and I have dealt with.’
‘The severity and scale of Isabelle’s injuries were shocking and the fact that Walker repeatedly lied to try and cover their tracks further added to the pain of Isabelle’s family,’ he continued.
‘Our thoughts remain first and foremost with Isabelle. She was a defenceless child whose life was cruelly taken from her, and the circumstances of her death have deeply affected everyone involved in this investigation.
‘We [will] remember Isabelle. She deserved a future filled with love, happiness and safety. She was denied that opportunity, and she must never be forgotten.’
Images: Shutterstock
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