Institutional explainers
Institutional explainers
Plain-English explainers covering the institutional dimensions of the Letby case. Each page links to the comprehensive source-linked material on this site. Hospital failings do not by themselves prove innocence — these pages distinguish institutional findings from criminal-evidence questions.
Countess of Chester governance — timeline
Timeline of governance decisions at the Countess of Chester Hospital 2015–2016 as documented in the Thirlwall Inquiry record.
The 2016 RCPCH invited review
What the Royal College of Paediatrics and Child Health invited review (2016) examined, what it concluded, and what its evidential weight is.
The CQC — role and limits in the Letby case
What the Care Quality Commission's role was in the Countess of Chester record, and what its 2016 inspection did and did not find.
Consultant concerns — the escalation timeline
How consultant concerns about deaths on the unit were raised and escalated through Trust management from 2015 onwards.
Trust executive decision-making — 2015–2016
What the Thirlwall record shows about executive decision-making at the Countess of Chester Hospital during the indicted period.
Police referral — how the case reached Cheshire Police
How the case was referred to Cheshire Police, and the sequence from Trust escalation to formal investigation.
Operation Hummingbird — investigation timeline
The Operation Hummingbird investigation timeline, from May 2017 onwards, including the scope decisions and the related Operation Duet.
Corporate manslaughter investigation — context
Context for the 30 June 2025 arrests of three former senior Trust executives on suspicion of gross negligence manslaughter.
The Thirlwall Inquiry — institutional issues in scope
What institutional issues fall within the Thirlwall Inquiry's terms of reference, and what falls outside them.