Secondary Victim Claims After Paul: The High Court Applies a Strict Lens in MIM v Sheffield Teaching Hospitals NHS Foundation Trust [2026] EWHC 562 (KB)

April 15, 2026

Summary:

The post-Paul landscape for secondary victim claims is rapidly crystallising and the scope for secondary victim claims in clinical negligence has, in practical terms, all but disappeared.

The High Court’s decision in MIM v Sheffield Teaching Hospitals NHS Foundation Trust [2026] EWHC 562 (KB) demonstrates the uncompromising effect of Paul v Royal Wolverhampton NHS Trust [2024] UKSC 1: unless a claimant can identify a discrete “accident” in the strict sense now required, the claim is likely to be struck out at an early stage.

The decision in MIM v Sheffield Teaching Hospitals NHS Foundation Trust [2026] EWHC 562 (KB) provides a clear and forceful illustration of the post-Paul landscape. For Solicitors advising on clinical negligence claims involving psychiatric injury, the message is now unmistakable: the pathway for secondary victims is narrow, and in most medical settings, it is effectively closed.

This judgment will be of particular interest where a family member witnesses distressing events during negligent treatment and then seeks to advance a claim for psychiatric harm.

The Facts in Brief

The Claimant father sought damages for psychiatric injury arising from his presence during a negligently managed labour which resulted in his child being born with an hypoxic brain injury. The Defendant admitted negligence in the management of the labour and delivery.

The central question was whether the Claimant could recover as a secondary victim, or whether his claim was barred by the principles established in Paul v Royal Wolverhampton NHS Trust [2024] UKSC 1.

The Defendant applied to strike out the claim under CPR 3.4(2)(a), alternatively for summary judgment under CPR 24.2. The High Court granted that application.

Paul Revisited: The Governing Principles

Paul now dominates this area of law. The Supreme Court in Paul re-asserted a strict control mechanism on secondary victim claims. The essential requirement is that the Claimant must witness an “accident”, properly and carefully defined.

At §24, Lord Leggatt and Lady Rose described an accident in its ordinary sense as:

“an unexpected and unintended event which causes injury (or a risk of injury) to a victim by violent external means”. The High Court in MIM emphasises three core features drawn from Paul:

A Discrete Event – An accident must be a clearly identifiable event, occurring at a particular time, in a particular place and in a particular way. This requirement is not incidental. It is central to legal certainty (see Paul at §108).
External Causation – The event must involve external means causing injury. The occurrence or manifestation of injury is not itself the accident (see Paul at §105).

The Accident as the Limiting Principle – The concept of “accident” is not merely descriptive. It is the boundary marker which defines the scope of liability. For example, claims arising from the progression of disease, or the consequences of internal medical processes, fall outside that boundary.

The Underlying Policy Constraint – As emphasised in the accompanying commentary, Paul is not merely definitional but principled. Secondary victim claims are an exception to the general rule that a person cannot recover for injury caused by harm to another. The Supreme Court’s approach reflects a deliberate policy choice to confine that exception tightly. In particular, the scope of a clinician’s duty does not extend to protecting relatives from the trauma of witnessing illness or its consequences, even where negligence is admitted / established.

Medical Crisis vs Accident

The key analytical and legal distinction, now firmly embedded, is between an accident and a medical crisis.

The Supreme Court held that witnessing death or injury caused by disease, even if negligently untreated, is not equivalent to witnessing an accident (see Paul at §142).

The High Court in MIM adopts that distinction without hesitation, describing the tragic events as a “negligently caused medical crisis” (§28) rather than an accident.

Application in MIM

The Claimant’s case was framed as a “continuum” of events during labour culminating in the child’s birth in a compromised state. That formulation proved fatal to the claim.

No Discrete Event

At §32, the Court held that a “continuum” is the very opposite of a discrete accident. The inability to identify a specific event was decisive. It is a salutary lesson that pleadings continue to matter.

No External, Traumatic Event

The Court rejected the suggestion that the sounding alarms, clinical concern, or urgency of delivery could constitute an accident. These were characterised as features of a deteriorating clinical picture, not an external event causing injury (§33).

Ordinary Language Matters

In a telling passage at §28, the Court stood back and asked how an ordinary person would describe the events. The answer was straightforward:

The ordinary person would say that MIM witnessed the process of labour and the birth of his son in an injured condition such that he required resuscitation – a description of a negligently caused medical crisis, rather than an accident.

This “common sense” cross-check is likely to feature increasingly in first instance decisions.

Temporal Proximity is Irrelevant

A notable submission was that, unlike in Paul, the negligence and injury here were closely connected in time and space. The Court found that distinction to be correct, but irrelevant.

As confirmed in Paul (§§95–96), there is no requirement for proximity between breach and injury. The focus is solely on whether there was an accident. This removes what had previously been seen as a potential avenue for Claimants in acute clinical settings.

Must There Always Be an “Accident”?

The Claimant advanced a broader submission that an accident is not a necessary precondition at all.

That argument was firmly rejected. The High Court interpreted Paul as making clear that an accident is an essential component of any secondary victim claim.

Attempts to rely on isolated passages from Paul suggesting flexibility were unsuccessful when the judgment was read as a whole.

Residual Possibility: Clinical Accidents?

The Court acknowledged that Paul does not entirely exclude the possibility of secondary victim claims in a medical context. The Supreme Court left open scenarios such as the administration of the wrong drug or a sudden catastrophic procedural error.

These may, in principle, constitute an “accident” (see §123 of Paul). However, as the High Court makes clear, such cases will be rare and fact-sensitive. Indeed, as noted extra-judicially and in commentary, the practical effect of Paul is that such claims will “almost always” fail in the clinical negligence context.

Litigation Strategy and Market Reality

This decision is likely to have an immediate and practical effect on how these cases are litigated. It seems Defendants are now far more likely to:

Adopt an early strike out or summary judgment strategy
Resist settlement on a risk basis
Treat such claims as legally unsustainable rather than fact-sensitive

Conversely, Claimants face a significantly higher bar at the pleading stage. As observed in commentary, the battleground may well shift forwards, toward early interlocutory disposal, rather than full trials.

Practical Implications for Solicitors

This decision reinforces several practical points:

Most Clinical Negligence Cases Will Not Support Secondary Victim Claims – Where injury arises from delayed diagnosis, failure to treat or deterioration during negligent treatment then the claim will almost invariably be characterised as a medical crisis, rather than an accident. Recovery will not be possible.

Pleading Strategy Requires Precision – Attempts to characterise events as a “continuum” or “process” are likely to fail. Ironically, a Claimant is more likely to succeed by pointing to a clear, single mistake, rather than a litany of errors that may be characterised as a continuum. Pleadings must identify a specific, discrete event, with external causation that is capable of being recognised as an accident. Absent that, the claim is vulnerable to being struck out. Pleadings have always mattered – this case underlines that reality.

Early Merits Assessment is Essential – Defendants are likely to pursue CPR 3.4 strike out or summary judgment at an early stage. This is now a highly effective procedural tool in this category of claim, which carries little risk – but significant rewards – for Defendants.

Conclusion

MIM v Sheffield Teaching Hospitals NHS Foundation Trust is not a development of the law but a demonstration of its current rigidity. The High Court has applied Paul in a clear and uncompromising manner. The requirement of an “accident” is not flexible, nor is it capable of expansion through creative pleading.

For Solicitors, the position is now clear: In the absence of a discrete, externally caused accident, secondary victim claims in clinical negligence are unlikely to survive even the earliest procedural hurdle.

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