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Born in United Kingdom · Nationality British — Crime / mafias / terrorism / criminal cases

Lucy Letby

Violent crime and serial killers

Documented profile covering 19 controversies, including “Application to Criminal Cases Review Commission over possible miscarriage of justice” and “Police investigation into other babies: eleven proposed offences referred to CPS for consideration”.

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Profile No. 2466 · Updated on 12 October 2026

19Documented controversies
15Sources
1 followed by a conviction

§ Legal statuses reflect the documented sources as of the date shown; they replace neither court decisions nor the presumption of innocence. Counts are not a rating. Methodology

I. Documented controversies

Case · 10 documented stages

Application to Criminal Cases Review Commission over possible miscarriage of justice

Conviction
01

3–4 February 2025–15 September 2026

Application to Criminal Cases Review Commission over possible miscarriage of justice

Conviction

The defence applied to the CCRC seeking a possible referral of the case to the Court of Appeal. The Commission received multiple reports, submissions and the original defence files; it confirmed in 2026 that its review remained ongoing.

State of the evidence
Documented
Attribution
Protagonist is the complainant

Sources · 2

  1. [1]
    Criminal Cases Review CommissionLucy Letby application received by Criminal Cases Review CommissionOfficial documentVery high reliability
  2. [2]
    Criminal Cases Review CommissionChair’s statement on Lucy Letby application reviewOfficial documentVery high reliability

Last verified: 15 September 2026

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07

2 July 2024

First appeal application rejected by Court of Appeal

Conviction

The Court of Appeal rejected the renewed application for permission to appeal against the first trial convictions, having considered several grounds relating, in particular, to expert evidence and directions given to the jury.

Attribution
Protagonist is the complainant

Sources · 1

  1. [1]
    Courts and Tribunals JudiciaryR v Letby [2024] EWCA Crim 748Court decisionVery high reliability

Last verified: 15 September 2026

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08

10 June–2 July 2024

Retrial and conviction for attempted murder of Baby K

Conviction

After the first jury failed to reach a verdict on this count, the prosecution retried the Baby K case. A second jury found Letby guilty of attempting to kill the child by interfering with her endotracheal tube and allowing her oxygen saturation to fall.

State of the evidence
Established by a court
Attribution
Personally implicated

Sources · 2

  1. [1]
    Cheshire ConstabularyNurse found guilty of attempting to murder premature babyOfficial documentVery high reliability
  2. [2]
    Courts and Tribunals JudiciaryRex v Lucy Letby — Sentencing Remarks, 5 July 2024Court decisionVery high reliability

Last verified: 15 September 2026

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09

5 July 2024

Fifteenth whole-life order

Conviction

For the attempted murder of Baby K, the court imposed a further life sentence with a whole-life order. Letby is therefore serving fifteen whole-life orders.

Attribution
Personally implicated

Sources · 2

  1. [1]
    Courts and Tribunals JudiciaryRex v Lucy Letby — Sentencing Remarks, 5 July 2024Court decisionVery high reliability
  2. [2]
    Criminal Cases Review CommissionLucy Letby application received by Criminal Cases Review CommissionOfficial documentVery high reliability

Last verified: 15 September 2026

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10

24 October 2024

Second appeal application rejected concerning Baby K

Conviction

The Court of Appeal rejected the application for permission to appeal against the Baby K conviction. The principal ground argued that publicity surrounding the first trial had made a fair trial impossible; the court did not accept it.

Attribution
Protagonist is the complainant

Sources · 1

  1. [1]
    Courts and Tribunals JudiciaryR v Letby [2024] EWCA Crim 1278Court decisionVery high reliability

Last verified: 15 September 2026

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11

October 2022–18 August 2023

First trial: seven murders and seven counts of attempted murder established

Conviction

At the conclusion of a trial lasting more than ten months, the jury found Letby guilty of seven murders and seven counts of attempted murder. It acquitted her of two other attempted murder charges and could not reach a verdict on six further counts.

State of the evidence
Established by a court
Legal status — source text
Convicted on 7 murder and 7 attempted-murder counts
Attribution
Personally implicated

Sources · 1

  1. [1]
    Courts and Tribunals JudiciaryR v Letby [2024] EWCA Crim 748Court decisionVery high reliability

Last verified: 15 September 2026

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12

2015–2016; verdicts 2023

Criminal methods accepted at trial: air, deliberate insulin administration, overfeeding and interference with medical devices

Conviction

The prosecution and verdicts accepted several mechanisms of deliberate harm involving different babies, including air injections, deliberate insulin administration, excess milk or fluid and interference with medical devices or airways.

Attribution
Personally implicated

Sources · 3

  1. [1]
    Courts and Tribunals JudiciaryR v Letby — Sentencing Remarks, 21 August 2023Court decisionVery high reliability
  2. [2]
    Courts and Tribunals JudiciaryR v Letby [2024] EWCA Crim 748Court decisionVery high reliability
  3. [3]
    ReutersExperts challenge baby killings conviction of UK nurse Lucy LetbyNews agencyVery high reliability

Last verified: 15 September 2026

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13

21 August 2023

Fourteen whole-life orders following first trial

Conviction

Mr Justice Goss imposed a life sentence with a whole-life order for each of the fourteen guilty counts from the first trial because of the exceptional seriousness of the crimes.

Legal status — source text
14 whole-life orders
Attribution
Personally implicated

Sources · 1

  1. [1]
    Courts and Tribunals JudiciaryR v Letby — Sentencing Remarks, 21 August 2023Court decisionVery high reliability

Last verified: 15 September 2026

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14

3 July 2018; June 2019; November 2020

Three successive arrests before charges brought

Formally charged

Letby was first arrested at her home in July 2018, then again in June 2019 and November 2020 before being charged.

State of the evidence
Documented
Attribution
Accused

Sources · 1

  1. [1]
    Cheshire ConstabularyNurse found guilty of attempting to murder premature babyOfficial documentVery high reliability

Last verified: 15 September 2026

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17

June 2015–June 2016

Abnormal increase in neonatal deaths and collapses at Countess of Chester Hospital

Conviction

The neonatal unit experienced an unusual increase in deaths and unexplained collapses among babies. The cases that became central to the criminal investigation occurred principally between June 2015 and June 2016.

State of the evidence
Documented
Attribution
Accused

Sources · 2

  1. [1]
    Cheshire ConstabularyNurse found guilty of attempting to murder premature babyOfficial documentVery high reliability
  2. [2]
    The Thirlwall InquiryThe Report of the Public Inquiry into events at the Countess of Chester Hospital, 2015 to 2018Official documentVery high reliability

Last verified: 15 September 2026

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02

July 2025–20 January 2026

Police investigation into other babies: eleven proposed offences referred to CPS for consideration

Investigation

Cheshire Constabulary referred files concerning nine babies to the CPS and requested consideration of nine further attempted murder charges and two additional murders.

Sources · 1

  1. [1]
    Cheshire ConstabularyOperation Hummingbird - Investigation updateOfficial documentVery high reliability

Last verified: 15 September 2026

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03

5 August 2026

Victims' Right to Review: final confirmation of no further prosecutions concerning six babies

No legal proceedings

At the families' request, an independent prosecutor reviewed six decisions concerning six attempted murder counts. In August 2026, the CPS confirmed its decision not to bring any new charges.

State of the evidence
Documented

Sources · 1

  1. [1]
    Crown Prosecution ServiceDecision not to charge Lucy Letby with further offences upheldProsecutor's statementVery high reliability

Last verified: 15 September 2026

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04

2025–September 2026

Continuing scientific controversy: experts favouring review themselves divided over certain arguments

No legal proceedings

Scientific challenges to the convictions continued in 2026. Some experts who had previously criticised aspects of the prosecution withdrew from the defence work, questioning the scientific robustness of other arguments advanced, while other experts maintained their criticism of the original evidence.

State of the evidence
Documented

Sources · 3

  1. [1]
    ReutersWho is Lucy Letby and why is her case so controversial?News agencyVery high reliability
  2. [2]
    The GuardianExperts quit Lucy Letby's defence team over 'scientific credibility' concernsPressHigh reliability
  3. [3]
    Criminal Cases Review CommissionChair’s statement on Lucy Letby application reviewOfficial documentVery high reliability

Last verified: 15 September 2026

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05

15 September 2026

Thirlwall report: 'complete failure' of safeguarding and finding that some attacks could have been prevented

Investigation

Lady Justice Thirlwall's final report concluded that management, governance and the protection of babies had failed profoundly. It found that some deaths and collapses could have been prevented if safeguarding procedures had been applied, and made seventeen national recommendations.

Sources · 2

  1. [1]
    The Thirlwall InquiryInquiry Report finds profound failure of management, governance and safeguardingOfficial documentVery high reliability
  2. [2]
    The Thirlwall InquiryThe Report of the Public Inquiry into events at the Countess of Chester Hospital, 2015 to 2018Official documentVery high reliability

Last verified: 15 September 2026

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06

4 February 2025

International panel of defence-appointed experts challenges medical causes of deaths and collapses

Civil / administrative proceedings

A panel of fourteen medical experts led by neonatologist Shoo Lee stated that it had found no medical evidence of murder in the cases examined and attributed the deaths or injuries to natural causes or inadequate care.

Sources · 2

  1. [1]
    ReutersExperts challenge baby killings conviction of UK nurse Lucy LetbyNews agencyVery high reliability
  2. [2]
    The BMJLucy Letby: No medical evidence to suggest murder, experts concludePressVery high reliability

Last verified: 15 September 2026

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15

September 2016–March 2017

Employment grievance, enforced apologies from consultants and plans for return to unit

Investigation

Letby challenged her redeployment through a grievance procedure. The hospital then concluded that she had been internally 'exonerated', required several consultants to apologise to her and considered returning her to the unit.

Sources · 2

  1. [1]
    The Thirlwall InquiryInquiry Report finds profound failure of management, governance and safeguardingOfficial documentVery high reliability
  2. [2]
    The Thirlwall InquiryThe Report of the Public Inquiry into events at the Countess of Chester Hospital, 2015 to 2018Official documentVery high reliability

Last verified: 15 September 2026

Add to this entry

16

May 2017

Police referral and launch of Operation Hummingbird

Investigation

Countess of Chester Hospital finally contacted Cheshire Constabulary in early May 2017. Police launched Operation Hummingbird to investigate neonatal deaths and collapses.

State of the evidence
Documented
Attribution
Directly implicated

Sources · 1

  1. [1]
    Cheshire ConstabularyNurse found guilty of attempting to murder premature babyOfficial documentVery high reliability

Last verified: 15 September 2026

Add to this entry

18

2015–June 2016

Repeated warnings from consultants about Letby's presence during incidents

No legal proceedings

Several consultants gradually raised concerns about the association between Letby's presence and unusual collapses and deaths, calling for protective measures and a more thorough investigation.

State of the evidence
Documented
Attribution
Directly implicated

Sources · 2

  1. [1]
    The Thirlwall InquiryInquiry Report finds profound failure of management, governance and safeguardingOfficial documentVery high reliability
  2. [2]
    The Thirlwall InquiryThe Report of the Public Inquiry into events at the Countess of Chester Hospital, 2015 to 2018Official documentVery high reliability

Last verified: 15 September 2026

Add to this entry

19

July 2016

Removal from clinical duties on neonatal unit

No legal proceedings

Following the latest concerns in June 2016, Letby was removed from direct clinical care and redeployed to non-clinical duties while the hospital reviewed the situation.

State of the evidence
Documented
Attribution
Directly implicated

Sources · 2

  1. [1]
    The Thirlwall InquiryThe Report of the Public Inquiry into events at the Countess of Chester Hospital, 2015 to 2018Official documentVery high reliability
  2. [2]
    The Thirlwall InquiryInquiry Report finds profound failure of management, governance and safeguardingOfficial documentVery high reliability

Last verified: 15 September 2026

Add to this entry

II. Constellation of documented links

  • Linked profile (portrait or initials) — click to open it
  • Line width: number of documented references
  • Hover over or tap a line: controversies and sources

Two profiles are linked when a documented controversy of one names the other. The link points to that controversy and its sources; it does not indicate a personal relationship.

List of documented links (3)
  1. David Davis1 documented reference
  2. Nazir Afzal1 documented reference
  3. Peter Hitchens1 documented reference

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