A History of Dismissed Claims: Why the Prosecution’s Star Witness Played the System
To truly understand the flawed medical narrative that led to the wrongful conviction of Lucy Letby—a catastrophic miscarriage of justice against a completely innocent woman—one must forensically examine the architect of that narrative: the prosecution's lead medical expert, Dr Dewi Evans. In complex medical trials, the jury relies entirely on the assumption that an expert witness is an objective, infallible scientist. But a deep dive into the newspaper archives reveals a deeply troubling history that provides the psychological key to his methodology.
Long before the tragedies at the Countess of Chester Hospital, Dr Evans was at the centre of another medical controversy. In February 1988, while working as a child specialist, Dr Evans dropped a "bombshell" claim regarding Swansea's Morriston Hospital. He publicly alleged that sick babies were dying on the unit specifically because the hospital was starved of a sufficient number of specially-trained nurses. Dr Evans was actively trying to sound the alarm on a failing, under-resourced NHS hospital system.
But the establishment immediately closed ranks. His shock outburst was swiftly denied by the West Glamorgan Health Authority. Worse still for his professional credibility, his claims were subsequently dismissed entirely by an official inquiry team. He attempted to take on the NHS bureaucracy, and he was publicly rejected and humiliated.
Hover over or tap the image to seamlessly zoom in and read the original 1988 report.
For an investigative journalist, this 1988 archival footnote is the missing piece of the puzzle. It demonstrates that Dr Evans is not just a medical expert, but a man who learned a very harsh lesson about survival within a failed system. It raises a profound question: did his humiliation in the late 1980s terrify him into never taking on the NHS establishment again?
Fast forward decades later to the Countess of Chester Hospital. It is a documented fact that the neonatal unit where Lucy Letby worked was suffering from severe, dangerous systemic failings. The ward was chronically understaffed, overwhelmed by an influx of highly premature infants, and plagued by shocking infrastructure issues, including raw sewage backing up into the sinks. When Dr Evans was tasked with reviewing the cluster of tragic neonatal collapses, he was looking at a scenario eerily similar to Swansea in 1988.
But this time, he did not point to the glaring systemic failures. He did not blame the hospital trust for starving the unit of resources. He knew from bitter experience that blaming a hospital results in swift denials and official dismissals. He knew how to play the system. Instead, the blame was placed squarely on the shoulders of an individual, frontline nurse.
Rather than exposing a failing NHS Trust—a move that had backfired on him so publicly in the past—it was far easier to assign blame to a lone target. This psychological pivot perfectly sets the stage for ScapegoatingScapegoating: The practice of singling out a person or group for unmerited blame and consequent negative treatment, often to deflect attention from systemic failures or broader institutional incompetence.. Blaming an innocent nurse neatly absolves the hospital management of corporate manslaughter. It gives the police their suspect, it protects the hospital's executives, and it secures the expert witness a lucrative, celebrated role in the prosecution.
Crucially, the 1988 inquiry is not the only time Dr Evans' professional judgement has been formally rejected. The pattern of his evidence being deemed unreliable continued right up to the eve of the Letby trial. Just months before taking the stand to testify against Lucy, a senior appellate judge, Lord Justice Jackson, heavily reprimanded Dr Evans in a separate 2022 Family Court ruling. The judge threw out Dr Evans' expert report entirely, taking the extraordinary step of explicitly describing his evidence as "worthless." Lord Justice Jackson criticised Dr Evans for failing to provide a balanced opinion, stating that he was acting as an advocate for one side rather than an objective, independent medical expert.
The Ultimate Compromise: "Trawling" for a Conviction
If Dr Evans’ history of dismissed claims and heavily reprimanded court testimony wasn't enough to shatter his credibility, the manner in which he became involved in the Lucy Letby investigation destroys the illusion of his scientific objectivity entirely.
In a standard, unbiased medical inquiry, police seek out the most relevant, actively practicing clinical experts to review evidence blindly. This did not happen here. During the trial proceedings, it emerged that Dr Evans actually pitched himself for the job. After seeing a television news report about the tragic spike in neonatal deaths at the Countess of Chester Hospital, he proactively contacted the National Crime Agency (NCA) to offer his services to the police.
He actively solicited the role. In legal and investigative circles, this is often referred to as "trawling" for police work.
Why is this detail so devastating to the prosecution's case? Because it completely alters the psychological starting point of the investigation. When an expert actively seeks to embed themselves within a police inquiry, their mindset inevitably shifts from a detached query of "What happened here medically?" to an active desire to assist law enforcement: "How can I help the police build their case?"
This is the very definition of Investigative BiasInvestigative Bias: A systemic error where an investigator or expert witness becomes so aligned with law enforcement objectives that they unconsciously tailor their findings to secure a conviction, rather than uncovering the objective truth.. Dr Evans inserted himself into the investigation not to find the truth, but to provide a theory that would satisfy the police narrative. Given his documented history of avoiding the blame of systemic NHS failures—knowing that doing so gets you dismissed—it is entirely logical that he provided the police exactly what they needed: a scapegoat.
Lucy Letby is sitting in a prison cell serving a whole-life tariff based on the theories of a man whose evidence has been branded "worthless" by senior judges, whose claims have been dismissed by official hospital inquiries, and who actively touted for the job of prosecuting her. This is not justice. This is a system failing an innocent woman to protect its own reputation.
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