Lucy Letby: Serial Baby Killer or Britain’s Greatest Medical Miscarriage of Justice? Thousands of Doctors Peтιтion for Review

Convicted in 2023 of murdering seven newborns and attempting to murder six others at Countess of Chester Hospital between 2015–2016, former nurse Lucy Letby, 34, remains Britain’s most notorious child serial killer, serving 15 whole-life sentences. Yet a growing scientific revolt now threatens to upend the verdict.

In February 2025, an international panel of 14 leading neonatologists—chaired by Dr Shoo Lee, co-author of the 1989 paper on air embolisms central to the prosecution—reviewed all 17 cases. Their unanimous conclusion: “No medical evidence” of deliberate harm. Deaths and collapses, they argue, resulted from natural causes or substandard care in an understaffed unit. The panel dismissed insulin poisoning claims as forensically unreliable and reinterpreted skin mottling and liver injuries as consistent with traumatic resuscitation or infection.

Over 1,900 nurses and thousands of doctors have signed open letters and peтιтions urging the Criminal Cases Review Commission (CCRC) to refer the case back to the Court of Appeal. Key prosecution witness Dr Peter Hindmarsh was under employer investigation during the trial—facts not disclosed at the time.

Prosecutors relied on statistical clustering, Letby’s presence at every incident, and a “I am evil” note. Critics call this tunnel vision, ignoring systemic failures documented in the ongoing Thirlwall Inquiry.

Letby’s barrister Mark McDonald insists the new expert evidence proves no murders occurred. Supporters label it the century’s greatest miscarriage; victims’ families and the Crown maintain the original evidence was overwhelming.

With the CCRC actively reviewing the application and the Thirlwall report delayed, the divide deepens. Is Letby a monster—or a scapegoat for NHS failures? The science may yet decide.