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Gross negligence manslaughter and corporate manslaughter: when does a tragic death become a crime?
4th August 2026

I recently addressed a meeting of trustees of an air ambulance charity to give them an overview of gross negligence manslaughter and corporate manslaughter. I now reproduce this as a summary of the basic ingredients of the offences. This is not legal advice but is intended as an accessible overview of the law.

 

When does a tragic death become a crime? Understanding gross negligence manslaughter and corporate manslaughter

Every year, people die in circumstances where mistakes have been made.

A patient receives the wrong treatment. A piece of machinery fails. A safety procedure is overlooked. A risk that should have been managed is not.

Yet only a very small number of those deaths result in criminal prosecutions.

Why?

The answer lies in an important distinction that the criminal law draws between tragedy, negligence and criminality.

Understanding that distinction is essential for organisations operating in high-risk environments, particularly those providing healthcare, emergency services or other activities where difficult decisions are made every day.This article summarises the law of England and Wales; different terminology and rules apply elsewhere in the UK.

 

An accident is not necessarily a crime

The criminal law does not punish every mistake. Nor does it punish every instance of negligence.

Most failings are dealt with through civil claims for compensation, professional disciplinary proceedings or regulatory action. Criminal liability is reserved for the comparatively rare case where conduct has fallen so far below the standard expected that society regards punishment as justified.

That principle lies at the heart of both gross negligence manslaughter and corporate manslaughter.

Although the offences are related, they are fundamentally different.

 

Gross negligence manslaughter – liability of individuals

Gross negligence manslaughter is a common law offence concerning the criminal liability of an individual for a grossly negligent act or omission that causes death.

The prosecution must establish that the defendant owed a duty of care to the deceased; that he or she negligently breached that duty; that a reasonably prudent person in the defendant’s position would have foreseen a serious and obvious risk of death arising from the breach; that the breach caused the death; and that the circumstances of the breach were truly exceptionally bad and so reprehensible as to require criminal sanction.

There must be a present, serious and obvious risk of death, not merely a risk of injury, even serious injury. It is assessed objectively and prospectively, using the knowledge available at the time of the breach.

The defendant’s actual awareness of the risk may be relevant evidence, but the legal test is objective. A lack of subjective appreciation of the risk is not necessarily a defence.

Ordinary carelessness is not enough. Even a serious mistake or isolated error of judgment will not ordinarily cross the criminal threshold, but there is no separate exemption for a single error: the jury must assess the conduct in all the circumstances and be sure that it was truly exceptionally bad.

The threshold is deliberately high.

That reflects an important public policy decision. Society depends upon professionals – doctors, nurses, pilots, engineers, emergency workers and many others – making difficult decisions, often under considerable pressure. Gross negligence manslaughter is reserved for the most serious departures from acceptable standards. Whether a mistake was honestly made is part of the factual context, but it does not replace the objective legal test.

Whether conduct is sufficiently gross to amount to gross negligence manslaughter is ultimately a question for the jury. The judge determines whether there is sufficient evidence for the case to proceed, but the final assessment of whether the breach was so exceptionally bad as to deserve criminal punishment is one for the jury applying the legal directions given by the court.

The prosecution must prove every element so that the jury is sure. In particular, the jury must be sure that the breach was so exceptionally bad and reprehensible that it amounted to a crime. It is a high test, and a high hurdle to overcome.

 

Corporate manslaughter – liability of organisations

Corporate manslaughter, created by the Corporate Manslaughter and Corporate Homicide Act 2007, asks a different question. It applies only to organisations of a kind covered by the Act, not to every group or association.

Rather than examining only the conduct of one individual, the court examines the way in which the qualifying organisation’s activities were managed or organised.

The prosecution must prove that the organisation owed the deceased a relevant duty of care recognised by the Act; that the way its activities were managed or organised caused the death and amounted to a gross breach of that duty; and that senior management’s management or organisation of those activities was a substantial element of the breach.

Investigators will consider questions such as:

  • Were risks properly identified?
  • Were appropriate safety procedures in place?
  • Were staff adequately trained?
  • Were concerns raised by employees acted upon?
  • Did senior management provide effective oversight?
  • Had previous warnings or near misses been ignored?

A breach is gross where the organisation’s conduct falls far below what could reasonably be expected of it in the circumstances. The Act defines both the organisations and duties that qualify and contains exclusions and partial exemptions for certain functions.

Unlike gross negligence manslaughter, corporate manslaughter does not require the prosecution to prove that there was a serious and obvious risk of death. The statutory questions are whether there was a gross breach of a relevant duty of care, whether senior management’s role was a substantial element of that breach, and whether the way the activities were managed or organised caused the death.

That reflects the reality that many serious incidents are not caused by a single catastrophic error. They result from a series of smaller failures that, over time, become embedded within the organisation’s culture.

 

Why governance matters

For boards of directors and trustees, this distinction is particularly important. Legal structure also matters: an incorporated charity can fall within the Act, whereas an unincorporated charity is covered only if its underlying structure is a qualifying organisation, such as a partnership that is an employer.

The law does not expect organisations to eliminate every risk. That would be impossible, particularly in healthcare, aviation and emergency services, where difficult decisions must often be taken quickly.

Instead, the law expects organisations to manage risk responsibly.

Effective governance is therefore an important safeguard against criminal and regulatory liability.

Investigators are likely to examine whether there were effective systems for identifying hazards, whether incidents were reported openly, whether lessons were learned from previous events and whether the board exercised meaningful oversight rather than simply receiving information without challenge.

A healthy safety culture is rarely demonstrated by the absence of incidents. It is demonstrated by the willingness of an organisation to identify problems, address them and continuously improve.

 

Can trustees or directors go to prison?

This is a question that is frequently asked.

An organisation convicted of corporate manslaughter cannot be imprisoned: the offence is committed by the organisation, and the Act prevents an individual from being convicted as an accessory to it. Individuals are not, however, immune from liability for separate offences arising from their own conduct.

A director, trustee or senior manager may therefore face prosecution for gross negligence manslaughter or an applicable health and safety offence. For example, section 37 of the Health and Safety at Work etc. Act 1974 can apply where an offence by a body corporate was committed with an officer’s consent or connivance, or was attributable to that officer’s neglect. There are a number of health and safety offences.

Personal criminal liability is not automatic merely because someone holds office. It depends upon the elements of the particular offence and the individual’s conduct, authority and responsibilities, not simply their job title.

 

The consequences of conviction

A conviction for corporate manslaughter carries serious consequences.

The court may impose an unlimited fine, make a remedial order on the prosecution’s application, and order publication of details of the conviction. It must also consider whether to make a compensation order, although compensation following a death will often be left to the civil courts.

For many organisations, particularly charities and healthcare providers, the reputational consequences may be more damaging than the financial penalty itself.

Public confidence, relationships with regulators, staff morale and future fundraising may all be significantly affected.

 

The wider lesson

Corporate manslaughter does not punish an organisation merely because a tragic death has occurred. It applies only where the statutory elements are proved, including a gross breach of a relevant duty of care, causation and the required substantial involvement of senior management.

Likewise, gross negligence manslaughter is reserved for exceptional cases in which every element of the objective test is proved and the individual’s breach was truly exceptionally bad. The fact that an error was honestly made is relevant context but is not by itself determinative.

Understanding that distinction is essential for anyone responsible for governance, leadership or the delivery of high-risk services.

The criminal law recognises that mistakes will occur.

Failures to learn from incidents, manage foreseeable risks or provide effective systems and leadership may lead to civil, regulatory, disciplinary or criminal consequences. Criminal liability arises only where the elements of a particular offence are proved to the required standard.

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