The Thirlwall Inquiry and institutional responsibility
This investigation compares direct wrongdoing with failures to investigate, escalate, and protect. It asks how moral responsibility should be allocated when one person causes harm and other people or institutions fail to respond to credible danger.
| Level | Estimated time | Textbook connection |
| Advanced | 60 to 80 minutes | Chapter 4 pp. 75 to 77 and Chapter 5 pp. 95 to 96 and 108 to 109 |
Critical Moral Reasoning skills used facts and judgments, duties, stakeholders, evidence limits, conflict resolution, transfer
Connection to the textbook This public module demonstrates one application of the method developed in Critical Moral Reasoning. The textbook provides the fuller explanations of the concepts and ethical frameworks used here.
Inquiry Focus
When can an institutional failure to act become morally comparable to direct wrongdoing
Learning Objectives
- Distinguish acts of commission from acts of omission.
- Identify the duty holder, the action that was possible, and the evidence needed to establish blame.
- Separate legal status, official findings, disputed claims, and moral conclusions.
- Apply duty-based and consequence-based reasoning without treating disputed facts as settled.
- Defend a conditional conclusion and state what evidence could change it.
Initial Position
Before reading the case record, write 100 to 150 words on whether a failure to act can ever be as morally serious as direct intentional harm. Identify one condition under which your answer would change.
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Case Record
Lucy Letby has convictions for murdering and attempting to murder infants at Countess of Chester Hospital. The Thirlwall Inquiry examined the conduct of hospital staff and the effectiveness of management, governance, safeguarding, and external oversight. It was not an appeal court and did not decide whether the convictions were sound.
The inquiry report was published on September 15, 2026. It found dysfunctional management and governance, prolonged delay in contacting police, failures to investigate the possibility of deliberate harm, and failures to keep parents informed. The report concluded that some collapses and deaths could have been avoided if safeguarding action had occurred earlier (The Thirlwall Inquiry, 2026).
The legal status of the convictions, the inquiry’s findings about systems, and continuing public disputes about medical evidence are different matters. A careful analysis must not use an institutional finding as proof of every contested causal claim.
Central Ethical Question
What conditions make a failure to investigate, escalate, or restrict access morally blameworthy, and how does that blame differ from responsibility for directly causing harm
Exercise 1 Separate the Evidence
Place each kind of claim in the appropriate category. Add one example from the case record and one source that would be needed to support it.
| Category | What it establishes | Example and source |
| Legal status | What a court has decided | |
| Inquiry finding | What the public inquiry concluded about institutions or procedures | |
| Open factual question | What remains disputed or requires additional evidence | |
| Moral judgment | What someone ought to have done or how blame should be assigned |
Exercise 2 Reconstruct the Omission
An omission is not established merely by showing that harm occurred. Complete the following analysis for one alleged institutional failure.
| Question | Your analysis |
| Who was the proposed duty holder | |
| What action was available | |
| What information was available at the time | |
| What authority or capacity did the duty holder possess | |
| What foreseeable harm could the action have reduced | |
| What uncertainty limits the conclusion |
Exercise 3 Stakeholders and Competing Principles
| Stakeholder | Power or vulnerability | Interests and possible harms |
| Infants and families | ||
| Clinicians who raised concerns | ||
| Managers and board members | ||
| Other patients and families | ||
| The accused nurse | ||
| The wider health system |
Generate at least four principles that may conflict. Include patient protection, fair investigation, response to credible warnings, and caution about inferring guilt from patterns. Rank the two principles you consider most important and justify the ranking.
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Exercise 4 Ethical Analysis
Use the assigned sections of Critical Moral Reasoning before applying a framework. Do not assume that a theory resolves factual uncertainty.
Duty analysis
- Which role-based duties arose once concerns were raised?
- Did uncertainty remove the duty to act, or did it create a duty to investigate?
- What would count as a proportionate response before guilt was established?
Consequence analysis
- What harms could earlier action plausibly have reduced?
- What harms could an unjustified accusation or restriction have caused?
- How should low-probability catastrophic harm affect a decision under uncertainty?
Justice and care
- Whose voice received institutional credibility, and whose vulnerability increased the duty of attention?
- Which safeguards could protect patients while preserving fair treatment for the accused?
Reasoned Conclusion
Write 400 to 600 words. State a principled test for when an omission becomes morally blameworthy. Apply it to one institutional failure identified by the inquiry, address a serious objection, and distinguish your conclusion from any claim the evidence does not establish.
Reflection and Transfer
- Compare your conclusion with your initial position. Identify the fact or principle that changed your reasoning, or explain why it remained unchanged.
- Apply your test to a software company that records dangerous device failures but has no process for escalating reports to engineers.
- State one important similarity and one limit of the analogy.
References
Holcombe, M. T. (2025). Critical moral reasoning: An applied empirical ethics approach.
The Thirlwall Inquiry. (2026, September 15). Inquiry report finds profound failure of management, governance and safeguarding. https://thirlwall.public-inquiry.uk/2026/09/15/inquiry-report-finds-profound-failure-of-management-governance-and-safeguarding/