Context
Former Detective Chief Superintendent Nigel Wenham led Cheshire Police’s Operation Hummingbird — the investigation of the Countess of Chester neonatal cluster — from its opening in May 2017. His Thirlwall Inquiry evidence is the principal public-record account of how the investigation was scoped, staffed, and advised. It is the counterpart, from the police side, of the anonymous whistleblower report released in December 2025.
Key ground
Read alongside
The Hummingbird whistleblower report, Dr Dewi Evans’s trial testimony.