Lucy Letby, a former neonatal nurse, is currently serving 14 life sentences after being convicted of murdering seven infants and attempting to murder seven others between June 2015 and June 2016 at the Countess of Chester Hospital.

Letby's legal team, led by barrister Mark McDonald, claims to have new evidence that undermines her convictions, asserting that Dr. Dewi Evans, a key expert witness, has changed his opinion regarding the deaths of three babies.

McDonald stated that Evans is now considered unreliable, raising doubts about the safety of all of Letby's convictions.

In response, the Crown Prosecution Service defended the original verdicts, emphasizing that both juries and three appeal judges have thoroughly reviewed the evidence against Letby.

Since her conviction, significant public doubt has emerged about the fairness of the trial, with critiques from medical professionals and statisticians questioning the evidence presented.

Former Conservative MP Sir David Davis has expressed strong belief in Letby's innocence, suggesting she deserves a fresh trial.

Families of the victims have condemned the public debate over Letby's conviction, labeling it as 'hurtful and distasteful.'

Concerns have been raised regarding flawed evidence, including door swipe data that linked staff to the scene of baby collapses, which emerged after the trials.

An ongoing inquiry into the hospital's failures to recognize the causes of infant deaths has been initiated, amid scrutiny of the evidence against Letby.

Cheshire Police is investigating approximately 4,000 babies who were under Letby's care at two hospitals, following her convictions in the summer of 2023.

Letby has voluntarily attended police interviews regarding additional deaths and collapses of babies during her employment, maintaining her innocence throughout.

McDonald is preparing a fresh appeal to contest Letby's convictions, presenting new statistical evidence to the Criminal Cases Review Commission.