A consultant paediatrician who worked with Lucy Letby tells ITV News that his concerns over the nurse were repeatedly ignored by managers at the Countess of Chester Hospital. Doctor Ravi Jayaram says that it is vital managers face more accountability in future and that an investigation into alleged failures is needed to uncover the truth. Report by Blairm. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn