Beneath chandeliers in the hall's grand ballroom, the Countess of Chester's respective former directors of nursing Alison Kelly, medical Ian Harvey, HR Sue Hodkinson, and ex-chief executive Tony Chambers spoke in public for the first time.

Lucy Letby’s father threatened to hold a gun to the head of the chief executive of the hospital she worked at, a public inquiry has heard.

The Thirlwall Inquiry into killer nurse Lucy Letby's crimes heard from former hospital chief executive Tony Chambers, who said he told the 34-year-old 'you astound me' during a meeting

Lucy Letby’s father threatened to hold a gun against a hospital boss’s head after he stopped the child serial killer from caring for babies, an inquiry has heard. Tony Chambers, former chief executive of the Countess of Chester Hospital, held a meeting with Letby and her parents, Sue and John, in December 2016.

The conversation came after the child serial killer was given an administrative role following fears for her patients’ safety.

A retired hospital chief has denied he could have prevented the murders of two triplet boys by nurse Lucy Letby, a public inquiry has heard. Letby injected air into the newborns on successive days at the Countess of Chester Hospital’s neonatal unit in June 2016 as part of a series of attacks from a year earlier in which she murdered seven infants and attempted to murder seven more.

The former chief executive of the Countess of Cheshire Hospital has described as “outrageous” a suggestion that he sought to ruin the careers of the consultants who tried to raise concerns about the neonatal nurse Lucy Letby.

Lucy Letby, 34, was found guilty of murdering seven infants and attempting to murder six others between June 2015 and June 2016 .

Tony Chambers led the NHS trust where neonatal nurse Lucy Letby, who fatally attacked babies between June 2015 and June 2016, worked. He has apologised to the families of her victims at an inquiry into events at the hospital.

Tony Chambers, the CEO of the Countess of Chester Hospital, met with the now convicted baby killer and her parents - and said her dad had made threats to staff