Only three "serious incidents" were flagged by hospital bosses to NHS England, an inquiry is told.

A statistics expert says eight deaths in one year would not have triggered an external investigation.

Police have reviewed the care of 4,000 babies who were in hospital during Lucy Letby's employment.

The CEO of the hospital where Lucy Letby murdered babies gives evidence at the Thirlwall Inquiry.

Sir David Davis claims case notes reveal that the conviction of Lucy Letby was based on flawed evidence.

The Nursing and Midwifery Council says it could have interpreted its own guidance differently.

Dr Alan Clamp has said regulating senior management could help improve patient safety.

Prosecution expert witness Dr Dewi Evans denies changing his opinion about how three babies died.