Trouble is
@Baileyboo, the claim that Dr Evans was originally asked to look at 60 cases is false.
In July 2017, at the beginning of his involvement, he looked at one case initially, the only file police passed to him, that of baby O.
He then asked police to send him all the files for cases of death and (non fatal) collapse, within the period they were looking into (2015/16), and they sent him 32 cases - 17 deaths (13 at the Countess, 4 at other hospitals after transfer from the Countess), and 15 collapses.
That then expanded to include the two insulin cases included in the trial, bringing it to 34 cases.
(Of the 13 deaths at the Countess, in 2015/16, Letby was present for 10, and had been on duty the shift before for two, making 12 out of 13.)
https://thirlwall.public-inquiry.uk/wp-content/uploads/thirlwall-evidence/INQ0010072_TAB1.pdf (spreadsheet showing all nursing staff on duty for 11 of the 13 deaths,
the other two deaths missing from the spreadsheet being O and P. This spreadsheet was prepared by the hospital prior to the RCPCH review.)
https://thirlwall.public-inquiry.uk/wp-content/uploads/thirlwall-evidence/INQ0108782.pdf (schedule of all 13 deaths at the Countess, and the 4 deaths at other hospitals, including causes of death determined)
Dr Evans determined seven of the 17 deaths to be unnatural and those were the trial murder cases. Babies A, C, D, E, I, O and P.
Dr Evans went on record in Sep 2023 (post-trial 1) as saying he had expressed concerns to police about some of the remaining 10 deaths, but the babies all had complicated underlying congenital conditions and it may not be possible to prove inflicted harm.
After Letby's first arrest in July 2018, Dr Evans was sent the medical files for 48 more babies, which dated back to 2012. These were not pre-determined to be suspicious or non-suspicious, that was for Dr Evans to sift. None of these cases were in the trial, presumably because the police were focused on the first set of expert reviews and interviews, and kept them separate.
Another consideration I suppose, is that in July 2018 Letby's name became public, and that is the first time Dr Evans knew of any suspect. But her counsel could claim thereafter that he would not be able to sift cases without bias, so maybe that's why they held those cases back.