May 2026: Thirlwall Inquiry report delayed to at least September 2026 · six-baby inquests relisted to 2027 · CCRC review active · Shoo Lee Panel: no medical evidence of deliberate harm.
In closing, the Crown's leading counsel Nicholas Johnson KC invited the jury to reject what he framed as a defence 'gang of four conspiracy theory' — namely that the consultant team (Brearey, Jayaram, Gibbs, Harkness) had developed a shared confirmation-biased belief that Ms Letby was responsible for the deaths and had driven the police referral and subsequent investigation in that frame. Johnson's rhetorical strategy was to present the defence position as a conspiracy theory and invite the jury to reject it on those terms.
The defence's actual position was not a conspiracy theory but a documented claim about confirmation bias: that the consultants had identified Ms Letby as a common factor early in 2016, that this identification shaped all subsequent clinical review, and that this mechanism is a routine institutional failure mode in serial-nurse-prosecution cases worldwide. The confirmation-bias mechanism is documented in the Allitt, de Berk, Norris and comparable cases. The 'gang of four' framing the Crown introduced in closing allowed the Crown to dispose of the confirmation-bias argument rhetorically rather than evidentially. The Thirlwall Inquiry has since documented, in evidence, the internal institutional dynamics the defence was pointing to — without any need to characterise them as conspiratorial.
The defence did not argue conspiracy. It argued confirmation bias. The Crown framed the defence as arguing conspiracy, invited the jury to reject conspiracy, and in doing so disposed of the confirmation-bias argument without engaging it.
The jury heard the 'gang of four' framing from the Crown's closing. The defence's confirmation-bias argument was not systematically structured in response to this rhetorical frame at the closing stage.
The Panel does not adjudicate the consultant-team dynamics question directly. But its case-by-case finding that no indicted case meets the diagnostic criteria for deliberate harm is consistent with the defence's underlying claim that the identification of Ms Letby as a common factor was a methodological starting point, not a methodological conclusion.