Dewi Evans

It presented expert opinions supporting different alleged mechanisms of injury, and it argued that Letby's presence and conduct linked her to the incidents.

One important witness was Dr. Dewi Evans.

He had reviewed medical records during the police investigation and formed opinions about the causes of several collapses.

His conclusions were supported or examined by other specialists, including Dr. Sandy Bowen.

Following her convictions, Lucy Letby sought permission to appeal.

Her legal team challenged aspects of the trial process and the evidence admitted before the jury.

The arguments included the role of Dr. Dewi Evans, the scientific basis of the air embolism evidence, and the directions given to the jury.

The defense also sought to introduce further expert evidence from Dr. Xu Li.

So I authored with colleagues the addendum, which specifically looked at making the investigation of questioned deaths within healthcare more effective.

Given what I know, had I been in the position of senior investigating officer in Operation Hummingbird, I would probably not have appointed Dewi Evans because he, he, for me, wouldn't have met the criteria of the sort of expert that I needed.

But the most important thing is I would never have appointed just one expert.

So what had happened to that multidisciplinary panel that both Dr. Stephen Brearey and the National Crime Agency had called for?

After the meeting, there's a letter from Dewi Evans where he says, "I don't think we need any further experts at this time." And the Hummingbird team have decided to go with that.

It disturbs me really because there was the opportunity at that point for Operation Hummingbird to do the right thing.

If they just said, "Thank you for that.

Yep.

So, yes, I mean, it is baffling.

How is it possible... that the prosecution managed to produce the evidence they did from this, mainly from this limited person, Dr. Dewi Evans, whose background is certainly one that's, I'll use the term, unusual in terms of how he became involved in the case and the kind of evidence he gave.

But nonetheless, his evidence was unchallenged by any alternative medical evidence.

And yet then within a year or two, a new defense team has managed to assemble this huge number of neonatologists who at this press conference that was called last year.