As the Thirwall hearings approach, the Guardian has discovered concerns were repeatedly raised about alarming shortcomings at Countess of Chester

Letby was also found guilty of attempting to kill seven infants at the Countess of Chester Hospital's neonatal unit.

Letby was also found guilty of attempting to kill seven infants at the Countess of Chester Hospital's neonatal unit.

A public inquiry examining events at the Countess of Chester Hospital is due to begin tomorrow in Liverpool.

A public inquiry examining events at the Countess of Chester Hospital is due to begin tomorrow in Liverpool.

Letby was convicted of murdering seven newborn babies and attempting to kill seven others at a hospital neonatal unit.

Letby was convicted of murdering seven newborn babies and attempting to kill seven others at a hospital neonatal unit.

Thirlwall inquiry hears apology from four former senior managers for failing to contact police sooner

Dr Michael Hall writes to inquiry saying he does not believe nurse received fair trial

Child C’s mother tells Thirlwall inquiry her family was ‘misled’ in a way that had ‘compounded our grief’