In brief
Seven medical experts, in a report submitted by Letby's lawyer, argue that the insulin tests cited by prosecutors in her murder trial were unreliable, leading to potential miscarriages of justice.
In a significant development in the ongoing case of nurse Lucy Letby, a report released by a group of seven pediatric doctors and toxicology experts reveals serious concerns regarding the reliability of insulin tests that played a crucial role in her conviction. Letby, sentenced to 15 life terms for the murders and harm of seven infants at a British hospital, has consistently proclaimed her innocence. On April 3, 2025, her legal team presented the new expert analysis to the Criminal Cases Review Commission in the UK, which independently investigates potential wrongful convictions. The report, prepared by professionals including a forensic toxicologist and an endocrinologist, contends that the evidence regarding insulin poisoning relied upon by the prosecution was flawed. “Our inescapable conclusion is that this evidence significantly undermines the validity of the assertions made about the insulin and C-peptide testing presented in court,” stated the experts in a summary provided by Letby's legal representatives.During her trials, Letby, who worked in a neonatal unit in northern England, was found guilty of deliberately causing harm and, in some cases, killing infants by various means, including injecting air, overfeeding, and allegedly administering insulin. However, critical questions surrounding the reliability of the insulin tests have emerged since her conviction, including discussions highlighted in a comprehensive New Yorker article last year.Despite these concerns and the submission of the new findings, Letby's attempts to revisit the case through a full appeal have faced repeated rejections, leaving her and her supporters determined to seek justice in the face of what they believe to be an extensive miscarriage of justice.
