The conviction of Simon Levy at the Old Bailey brings together some of the most difficult issues confronting the criminal justice system: the assessment of forensic evidence, the interpretation of pathological findings, the vulnerability of victims, and the consequences when repeated opportunities to intervene fail.
After a five-week trial, Levy, 40, was convicted on 7 August 2026 of murdering Carmenza Valencia-Trujillo and Sheryl Wilkins in 2025. He was also convicted of two counts of rape, grievous bodily harm and intentional strangulation relating to another woman attacked in January 2025. On 12 August, Judge Mark Lucraft KC imposed a whole-life order, meaning that Levy will spend the remainder of his life in prison. The Metropolitan Police described the sentence as following a complex investigation into a violent predator.
The case was more disturbing because the murders occurred against the background of an established history of sexual offending. Levy had previously been convicted of sexual assaults and was on the sex-offender register. The prosecution case was that he repeatedly preyed on vulnerable women, with sexual violence being intimately connected to his offending. The court heard that he had carried out numerous sexual assaults, including attacks on women travelling on London’s transport network.
The Importance of Expert Evidence
For a legal practitioner, perhaps one of the most significant aspects of the trial was the role played by forensic and pathological evidence.
The expert evidence did not just provide a medical narrative of what had happened to the victims. It assisted the jury in considering whether apparently ambiguous injuries and post-mortem findings were consistent with the prosecution’s case.
In relation to Sheryl Wilkins, a forensic pathologist gave evidence concerning the extensive injuries identified on her body. Approximately 80 injuries or marks were identified, with around 60 considered to have been inflicted at or around the time of death. A subsequent examination identified a fractured bone in her throat. The pathologist said that the findings strongly suggested the involvement of another person, although he could not conclusively state that Wilkins had been strangled.
This is an important illustration of the limits, as well as the value, of expert evidence. A forensic pathologist is not required to manufacture certainty where the medical evidence does not permit it. The distinction between what an expert can establish, what the findings strongly suggest and what remains incapable of proof is fundamental to properly reasoned expert testimony.
The evidence concerning Carmenza Valencia-Trujillo presented a different forensic problem. Her post-mortem examination initially failed to establish a definitive cause of death. The expert told the jury that strangulation could not be ruled out, but equally the possibility of a drug-related death could not be excluded. The Metropolitan Police subsequently confirmed that the initial post-mortem could not establish whether there had been third-party involvement.
That uncertainty had significant legal consequences. Levy was arrested on suspicion of Valencia-Trujillo’s murder on 1 April 2025, but was released on bail while further investigative work continued because the evidential threshold for a murder charge had not been reached. Five months later, Sheryl Wilkins was dead.
The prosecution was therefore faced with a case in which pathological evidence could not, in isolation, provide a definitive explanation of Valencia-Trujillo’s death. The eventual prosecution depended upon the accumulation and interpretation of evidence rather than a single conclusive medical finding.
A further expert gave evidence concerning strangulation and its forensic presentation. The jury was told that a victim of strangulation does not necessarily exhibit bruising around the neck. That evidence was highly relevant to the allegation that Levy had strangled the surviving victim and to the prosecution’s contention that strangulation or suffocation formed part of the circumstances surrounding the deaths.
The significance of such evidence lies in preventing a common but potentially dangerous assumption: that the absence of an obvious external injury necessarily disproves an allegation of strangulation. Expert evidence can assist a jury in understanding why the human body does not always exhibit the physical signs that a lay observer might expect.
From Question Marks to Conviction
The prosecution ultimately assembled a substantial evidential picture. Investigators examined hundreds of hours of CCTV footage to reconstruct Levy’s movements before and around the murders. Crucially, DNA belonging to Sheryl Wilkins was found on a jacket belonging to Levy, which the Metropolitan Police described as compelling forensic evidence. (Mynewsdesk)
The surviving victim’s evidence was also critical. She described being raped, beaten and strangled before being left for dead. The judge specifically commended her courage in coming to court, while the senior investigating officer said her testimony was crucial to securing the conviction.
The jury returned guilty verdicts after approximately 13 hours of deliberation. Family members were visibly distressed as the verdicts were delivered.
The Suffering Beyond the Courtroom
For the families, a conviction could never amount to restoration.
Carmenza Valencia-Trujillo was 53. Her daughter, Nazly Johana Fuenmayor Valencia, described her mother as the pillar of her family. The Metropolitan Police said Carmenza had been a much-loved member of her community, full of life and a woman who had welcomed a grandchild in 2024.
Sheryl Wilkins was 39 and a mother of four. She was murdered only a day before her 40th birthday. Her family described her as much loved and said that she remains desperately missed.
Her mother, Mary, delivered a particularly poignant victim impact statement. She told Levy that Sheryl’s death had ended his opportunity to harm further women, expressing the belief that her daughter had ultimately prevented other victims from suffering similar abuse. Her sister, Lindsey Hicks, spoke of the emotional and mental toll of hearing the evidence about what had happened to Sheryl and of the unbearable pain inflicted upon the family.
The surviving victim also addressed the court. She described herself as a mother and classical pianist and spoke of the trauma, humiliation and loss of dignity caused by Levy’s attack. Yet her statement contained an extraordinary element of resilience: she told the court that she intended to rebuild her life and play music again.
The Broader Legal Questions
The case has inevitably generated scrutiny beyond the question of Levy’s guilt.
The Metropolitan Police, British Transport Police and Crown Prosecution Service have all acknowledged failures in the handling of Levy before the murders. The CPS has admitted shortcomings in attempts to secure his remand in custody, while police failures included delays and problems in the management and assessment of his risk. Two Metropolitan Police officers are under investigation by the Independent Office for Police Conduct.
The Metropolitan Police itself has acknowledged that opportunities to prevent further offending were missed. Its investigation has subsequently led to changes in intelligence-sharing and offender-risk procedures.
For the expert witness community, the case also demonstrates why forensic evidence must be approached with precision. The pathologists did not necessarily provide the simple answers that investigators or families might have hoped for. Instead, their evidence identified what could be established, what could reasonably be inferred and what remained uncertain. That is the proper function of expert evidence. It is not advocacy. It is not speculation. It is the disciplined application of specialist knowledge to assist the court.
In the Levy trial, pathological evidence formed one part of a much wider evidential mosaic. CCTV, DNA, witness testimony, previous offending and the accounts of the surviving victim all contributed to the prosecution case. The jury ultimately accepted that evidence beyond the criminal standard of proof.
The whole-life order provides finality in one sense: Simon Levy will never be released. But it cannot undo the deaths of Carmenza Valencia-Trujillo and Sheryl Wilkins, nor erase the trauma experienced by the surviving victim and the families.
For those families, the verdict represented justice. It was not, and could never be, closure in the ordinary sense of that word. Their lives continue with the consequences of crimes that began long before Levy finally faced the full weight of the criminal justice system.
The case therefore leaves two concrete lessons. The first concerns the importance of rigorous, independent expert evidence when medical findings are complex or inconclusive. The second is more uncomfortable: expert evidence can help explain what happened, but no forensic discipline can repair the human damage left behind when a preventable sequence of offending culminates in murder.
