Dr Dewi Evans’s evidence has been criticised, even ridiculed, but he maintains his work stands up to scrutiny

In the account Dr Dewi Evans gives of the work he did for the police and prosecution cases against Lucy Letby, he says he suspected “foul play” within 10 minutes of reading the first medical records of a baby that he saw.

Evans, then 67, a retired consultant paediatrician, says when he looked at postmortem photos of that first baby he saw bleeding over the liver. “I thought, ‘Oh my God. This baby has suffered trauma.’ We knew instantly that something suspicious had gone on.”