THE FORENSIC TIMELINE THAT HELPED REVEAL WHAT HAPPENED TO PRESTON DAVEY

LANCASHIRE, ENGLAND — The death of 13-month-old Preston Davey was ultimately traced through a complex body of forensic, medical and digital evidence that prosecutors used to reconstruct both his final hours and the injuries he had suffered beforehand.

The evidence presented during the trial painted a far different picture from the explanation initially given for Preston’s death.

40 INJURIES DOCUMENTED

A post-mortem examination identified 40 traumatic injuries on Preston’s body.

According to Lancashire Police, the findings included numerous external bruises, injuries involving his mouth and throat and a healing fracture to his upper arm that experts considered non-accidental.

Investigators also recovered photographs and videos from electronic devices that prosecutors said showed earlier injuries to the toddler.

Those pieces of evidence were important because they allowed investigators to examine Preston’s condition over time rather than focusing only on the day he died.

WHAT HAPPENED ON THE FINAL DAY?

On July 27, 2023, Preston was recorded struggling to breathe.

The prosecution argued that he had been assaulted earlier that day before suffering another assault that caused the fatal obstruction of his airway.

He was taken to hospital at around 6:24 p.m., unconscious and in cardiac arrest.

Despite attempts to resuscitate him, Preston was pronounced dead at 7:20 p.m.

THE EVIDENCE THAT CHANGED THE INVESTIGATION

An explanation involving a bath was initially given after Preston’s collapse.

But forensic examination did not support drowning.

Police said Preston arrived at hospital dry, including his hair, while the post-mortem examination concluded that he died from acute upper-airway obstruction.

That medical finding became a major part of the prosecution’s case.

FROM AN ALLEGED ACCIDENT TO A MURDER CONVICTION

The combination of forensic evidence, medical findings, digital material and witness testimony ultimately helped prosecutors establish a wider pattern of abuse.

Jamie Varley was convicted of murdering Preston and later received a whole-life order. His partner, John McGowan-Fazakerley, was convicted of causing or allowing Preston’s death.

The case demonstrated how evidence collected from different sources can transform investigators’ understanding of a child’s final days.

The most important revelation was not simply the cause of death.

It was the timeline.

The injuries documented before Preston’s final medical emergency became part of a much larger picture — one that ultimately led a jury to reject the explanation that his death was an accident.

Behind the final medical emergency was a forensic trail that prosecutors said revealed what had happened to Preston long before he arrived at the hospital.