Lucy Letby and the medical experts who believe she is innocent – podcast

She was called the worst child serial killer in Britain in modern times. So why are medical experts saying her conviction is unsafe? Josh Halliday and Felicity Lawrence report

Lucy Letby was convicted for the murder and attempted murder of more than a dozen babies. She has been called the worst child serial killer the UK had seen. But even before the trial was over experts had begun raising concerns about her conviction.

Then, last week, came a bombshell press conference in which a panel of renowned neonatal experts said they believed not just that Letby's conviction was unsafe - but that there was no murder or deliberate harm. Instead they said the deaths had been caused by a series of factors including understaffing and a lack of skills on the ward to treat the babies they were caring for. So what is the evidence that the panel was looking at and why do so many questions seem to swirl around the Letby trial?