The Lucy Letby Inquiry: Three Babies Might Have Survived If the Hospital Had Acted Sooner
Three babies might have survived if bosses and doctors at Countess of Chester hospital had acted sooner on concerns about Lucy Letby. That is the central finding of the Thirlwall inquiry into what happened on the hospital's neonatal unit, the specialist ward for sick and premature babies The Guardian.
The inquiry, led by Lady Justice Thirlwall, found a "complete failure" to protect babies on the unit. It concluded that seven other babies could have been protected if action had been taken earlier.
The report separates deaths from other harm. It says two newborn twins would not have died if Letby had been removed from the unit sooner. Five other babies would not have been harmed under that same change. A third baby, a two-month-old girl, and two other babies who had unexplained collapses, might have been protected if a doctor had spotted an earlier case of insulin poisoning.
One affected child is now 11 years old. The inquiry says the child has a lifelong brain injury and needs 24-hour care.
The timeline starts in 2012, when Letby joined Countess of Chester hospital straight from university. In June 2015, three newborns died in unexplained circumstances in less than two weeks on the unit. That number would normally be expected in a year. Letby was removed from the neonatal unit in July 2016.
Letby, 36, is serving 15 whole-life prison terms, which means prison for life with no release, after being convicted of murdering seven babies and attempting to murder seven others at the hospital in the year to June 2016. She was found guilty of murdering seven babies on 18 August 2023.
The inquiry heard evidence from nearly 400 witnesses. Thirlwall presented her 822-page report at Liverpool town hall, where families of some of the babies had gathered.
The Thirlwall Inquiry is examining events at Countess of Chester Hospital following the trial and convictions of former neonatal nurse Lucy Letby Thirlwall Inquiry. Its terms of reference ask it to look at three broad areas, including the experiences of the hospital and other relevant NHS services, the UK's public health system Thirlwall Inquiry Terms of Reference. In May 2025, the inquiry said its final report would be published in early 2026 Reuters.
The convictions stand. The Court of Appeal, which checks for serious legal mistakes, has twice rejected Letby's bids to challenge her convictions. The Criminal Cases Review Commission, the independent body that can send a case back to appeal, is reviewing a file of evidence put forward by experts on Letby's behalf.
The report recommends 24-hour cameras on every cot in a neonatal unit.
The broader context here is how accountability works in closed medical settings. Neonatal units care for very small numbers of fragile patients, with the same staff on shift over long periods. When a baby gets worse, it can be hard to tell a natural cause from harm, like a smoke alarm that is hard to hear in a noisy room. That puts weight on clear warning procedures, senior doctors, and managers responding when death numbers look unusual. Thirlwall points to two separate gaps, the failure to remove Letby from the unit and the failure to spot insulin poisoning, which relate to management and medical oversight.
Looking at what this means for the health service and the courts, two tracks now run side by side. The first is practical. Camera monitoring, rules for when to review deaths, and duties for managers to act on doctors' warnings will have to be weighed against privacy, staffing, and cost across NHS trusts. The second is legal. Any referral by the CCRC would not change the inquiry's findings on institutional failure, but it would reopen debate over how evidence was read, while families seek closure after an inquiry process that has lasted years.
