Lucy Letby convictions under scrutiny as experts challenge trial evidence in new ITV doc(Image: Chester Standard / SWNS.com)

Several medical experts criticise the “deeply disturbing” and “flawed” evidence used to convict killer nurse Lucy Letby in a new documentary on TV tonight.

Letby was found guilty of m:u.r.dering seven newborn babies and attempting to kill seven others and was handed 15 whole life sentences, meaning she will never be released from prison.

But in ITV’s Lucy Letby: Beyond Reasonable Doubt? her barrister Mark McDonald says: “There’s no direct evidence, no one saw her do anything wrong.” It comes after it was reported that ‘scared’ Letby can’t lose weight as she hoards ‘junk food’ behind bars.

He adds: “In the trial, they started from the starting point, ‘She has done harm. Now we have to show how she has harmed each child….we’re just going to put together a theory.’ And she was convicted on that theory.”

Two appeals have failed. But in February a panel of medical experts, led by Dr Shoo Lee, found Letby did not m:u.r.der any babies. Her defence team has now submitted an application to the Criminal Cases Review Commission.

Dr Neena Modi, ex-president of the Royal College of Paediatrics and Child Health, says: “It’s been deeply disturbing that one can have such a… tremendously important trial that seems to have been conducted with so many flaws.”

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Letby was found guilty of m:u.r.dering seven newborn babies(Image: MEN MEDIA)

One alleged flaw is a shift chart, used to prove Letby was always present when the babies were harmed at the Countess of Chester Hospital from 2015 to 2016.

But statistician Professor Jane Hutton says some incidents, when Letby was not working, were left off, adding: “This is a summary that is so crude it can only be described as grossly misleading.”

It was also claimed Letby must have caused one baby’s d3ath by removing a breathing tube. But several experts say the tubes can be dislodged for a “variety of reasons”.

Notes by Letby, including the phrase “I am evil I did this” were presented as confessional in court. But it is claimed she was encouraged by hospital staff to write down her feelings to help cope with stress.

Baby killer Lucy Letby has reportedly grown closer to another notorious child murderer in jail(Image: AP)

It is also alleged the prosecution’s lead expert, Dr Dewi Evans, has altered his view about how three babies d!ed since the case.

But he denies this, saying his evidence has been agreed by a jury and the Court of Appeal. He also argues the case by Dr Shoo Lee’s panel has not been held to scrutiny in court and contains significant factual errors.

The CPS said: “Lucy Letby was convicted of 15 separate counts following two jury trials.

“In May 2024, the Court of Appeal dismissed Letby’s leave to appeal on all grounds, rejecting her argument that expert prosecution evidence was flawed.”

It added that it is considering police files on further baby d3aths and collapses at the Countess of Chester and Liverpool Women’s Hospital.