Dr. Lee himself testified before the Court of Appeal that it was not consistent, nor was it sufficient to make the diagnosis. The court ruled this was all known during the trial and thus did not constitute new evidence.

Let's assume for a moment that everyone on Letby's side is correct, and no babies were intentionally harmed, Dewi Evans made a wrong diagnosis, and the Jury wrongfully convicted Letby. What grounds are left for her to appeal? What "new evidence" could possibly exist to exonerate her?