Frank Ferguson, from the CPS, said it had written to the families involved and would offer meetings to explain the decision.
The head of the CPS’s special crime and counter terrorism division said: “We received a file of evidence from Cheshire Constabulary in July 2025 asking us to consider further allegations against Lucy Letby, 36, relating to deaths and non-fatal collapses of babies at the Countess of Chester Hospital and Liverpool Women’s Hospital.
“Following a thorough review of that evidence, we have decided that no criminal charges should be brought in respect of those further allegations.
“The Crown Prosecution Service considered offences of murder and attempted murder in respect of two infants who died and attempted murder in respect of seven infants who survived.
“We concluded that the evidential test was not met in any of those cases.”
Cheshire Constabulary said the decision not to pursue criminal proceedings was “not the outcome we had anticipated”.
