2 Experts Quit Lucy Letby Defence Over Scientific Credibility Concerns
Updated
Updated · The Guardian · Sep 15
2 Experts Quit Lucy Letby Defence Over Scientific Credibility Concerns
3 articles · Updated · The Guardian · Sep 15
Summary
Helen Shannon and Geoff Chase withdrew from Lucy Letby’s defence team on Monday, saying some arguments advanced in her challenge to the insulin convictions were not scientifically credible.
The two experts said they still believed it was “very unlikely” two babies were poisoned, but told the CCRC other defence claims had “fundamental unresolvable problems” and created ethical and professional risks.
Mark McDonald, Letby’s barrister, said the case does not depend on any one expert and that multiple international specialists have identified flaws in the trial science on Babies 6 and 12.
Letby, 36, is serving 15 whole-life orders after 2023 convictions for murdering 7 babies and attempting to murder 7 others; the CCRC has been reviewing her case for 18 months.
A public inquiry into the Countess of Chester hospital deaths is due to report Tuesday, while police continue investigating potential corporate manslaughter and gross negligence manslaughter.
Why did key experts abandon Lucy Letby's defense team just as her appeal review reaches a critical stage?
What unscientific claims was the defense pushing that forced their own experts to warn of severe ethical breaches?
When Experts Walk Away: The 2026 Letby Case, CCRC Appeal, and the Urgent Need for Reform in UK Expert Testimony
Overview
In September 2026, Lucy Letby's defense was thrown into turmoil when key experts Helen Shannon and Geoff Chase resigned, citing fundamental disagreements with the scientific credibility of other arguments advanced by her legal team. Their departure, driven by ethical concerns and the risk of professional sanctions, significantly weakened the appeal's credibility before the Criminal Cases Review Commission (CCRC). This setback was compounded by reductions in legal aid, shifting the burden of securing expert evidence onto the CCRC and making it harder for the defense to find independent, high-quality experts. The case highlights deep systemic flaws in how UK courts handle complex scientific evidence, where adversarial bias and funding issues can undermine justice.