Experts have raised concerns about the safety of Lucy Letby's convictions, highlighting a lack of forensic evidence and reliance on statistical data and expert opinion. The former neonatal nurse was found guilty of murdering seven babies and attempting to murder seven others, but some clinicians argue that key evidence does not withstand scrutiny.
No forensic proof linked Letby to the crimes, and no witness saw her causing harm. The prosecution's case depended heavily on medical expert testimony and a shift table suggesting she was the 'one constant presence' during collapses. Statisticians have described this table as fallacious.
A Guardian investigation interviewed dozens of experts, including neonatologists, nurses, and microbiologists, who questioned the evidence. Many remain anonymous due to fear of repercussions. They acknowledge the trauma of the families but feel compelled to speak out.
The Countess of Chester Hospital experienced a cluster of 13 deaths between June 2015 and June 2016, following four deaths per year in previous years. A Royal College of Paediatrics review found severe understaffing and lack of consultant oversight. Letby was removed from duty in late June 2016 after further deaths.
