Official records and document collection
Official Thirlwall Inquiry documents (direct PDFs):
- Thirlwall Inquiry — Summary Report (September 2026, 76 pages, PDF)
- Thirlwall Inquiry — Recommendations (September 2026, 9 pages, PDF)
The Cheshire Police statement is linked to its original webpage below, not reproduced or uploaded. The inquiry examined organisational decisions and safeguarding, not Lucy Letby’s criminal guilt or the validity of her convictions.
Case overview and current status
The Thirlwall Inquiry published its report on 15 September 2026 concerning events at the Countess of Chester Hospital from 2015 to 2018. The inquiry examined governance, patient safety and safeguarding following Lucy Letby’s criminal convictions. It was a public inquiry, not a criminal appeal. Letby’s convictions and any Criminal Cases Review Commission process must be reported separately from the inquiry’s findings.
Interactive investigation timeline
2015–2018 — Events examined
The public inquiry examined events in the neonatal unit and the response of hospital leadership. Consult the inquiry report for precise incident-specific findings.
October 2023 — Operation Duet begins
Cheshire Police launched a separate investigation into potential corporate manslaughter at the hospital.
March 2025 — Investigation expands
Police expanded Operation Duet to potential gross negligence manslaughter by individuals.
June 2025 and April 2026 — Police actions
Police reported three senior leadership arrests in June 2025 and an arrest in April 2026 on suspicion of perverting the course of justice. As of the police statement dated 15 September 2026, those individuals remained on bail pending enquiries. Arrest does not establish guilt.
15 September 2026 — Inquiry report
The inquiry published its final report and recommendations. The chair identified management, governance and safeguarding failures.
Evidence and separate legal processes
Public inquiry: examines systems and institutional decisions. Operation Duet: ongoing police investigation into potential corporate and individual criminal liability. Criminal convictions / CCRC: separate criminal judgments and any statutory conviction-review process. Neither inquiry findings nor police investigations automatically alter a conviction.
Unresolved questions
Which recommendations will be implemented, what decisions will police and prosecutors make concerning Operation Duet, and what is the status of any CCRC review? Verify each against the responsible agency before publishing further claims.
Primary-source document library
- UK government: Thirlwall Inquiry report and volumes
- Chair’s final statement
- Cheshire Constabulary: Operation Duet statement, 15 September 2026
Sources reviewed 21 October 2026. No new CCRC decision is asserted here; future developments will be verified against official records.