# Causation and remoteness in negligence

> **Key takeaway:** But-for factual cause (or material contribution where applicable) → no break in chain → kind of damage foreseeable (Wagon Mound); extent can be greater (thin skull). Professional/economic loss: scope of duty (Manchester BS / Khan). Remoteness ≠ quantification.

- **Jurisdiction:** England & Wales
- **Practice area:** Commercial
- **Last reviewed:** 2026-08-04
- **Interactive page:** https://kttclegal.info/library/notes/Commercial/causation-remoteness-negligence
- **Keywords:** causation, remoteness, Wagon Mound, but-for, material contribution, SAAMCO, scope of duty, novus actus, thin skull

## What is this about?

Even where duty and breach are proved, a negligence claim fails unless the breach caused the claimant's damage and that damage is not too remote. English law separates factual causation, legal causation (intervening acts), and remoteness (scope of duty / foreseeability of the kind of damage), with special rules for multiple causes and material contribution.

## What is the core rule?

The claimant must show that the defendant's breach was a cause of the damage: normally the but-for test, modified where necessary by material-contribution principles in appropriate cases. The breach must also be an effective legal cause (not displaced by a novus actus interveniens). Recoverable damage is limited by remoteness: generally, the kind of damage must have been reasonably foreseeable (The Wagon Mound (No 1)), subject to the thin-skull rule for the extent of foreseeable kinds of injury and to scope-of-duty analysis in pure economic loss and professional advice cases (SAAMCO / Manchester Building Society / Khan v Meadows line).

## What are the elements or test?

1. Factual causation: but-for the breach, would the damage have occurred? If multiple cumulative causes, consider material contribution to damage or to risk where the authorities allow
2. Legal causation: did a later act break the chain (free, deliberate, informed third-party act; unreasonable claimant conduct in some cases)?
3. Remoteness: was the kind of damage reasonably foreseeable (Wagon Mound)? Extent of that kind of damage need not be foreseeable (thin skull)
4. Scope of duty: especially in professional negligence / pure economic loss — is this loss within the risk the duty was supposed to guard against (SAAMCO and later Supreme Court refinements)?
5. Quantification is separate from liability causation once cause-in-fact and remoteness/scope are cleared

## Which authorities matter?

- **Cork v Kirby MacLean Ltd [1952] 2 All ER 402** — Classic but-for formulation of factual causation in negligence.
- **Overseas Tankship (UK) Ltd v Morts Dock & Engineering Co Ltd (The Wagon Mound) [1961] AC 388** — Privy Council: remoteness turns on reasonable foreseeability of the kind of damage, not directness alone.
- **Bonnington Castings Ltd v Wardlaw [1956] AC 613** — Material contribution to indivisible damage can establish causation where but-for is impractical.
- **Manchester Building Society v Grant Thornton UK LLP [2021] UKSC 20, [2022] AC 783; Khan v Meadows [2021] UKSC 21, [2022] AC 852** — Supreme Court restatement of scope-of-duty / SAAMCO analysis for the link between the purpose of the duty and recoverable loss.

## How does this apply in practice?

This note addresses causation and remoteness after breach. Fairchild exceptional mesothelioma risk rules, loss of chance, and pure psychiatric injury control mechanisms need specialist treatment beyond this overview. Always keep duty stage and scope-of-duty analysis distinct from 'but-for' fact-finding.

## What are common pitfalls?

- Treating any factual link as enough without legal causation and remoteness
- Applying thin-skull thinking to unforeseeable kinds of loss rather than to the extent of a foreseeable kind of injury
- In professional advice claims, skipping SAAMCO/scope-of-duty and arguing only but-for
- Assuming multiple wrongdoers always defeat the claim — contribution and material contribution may still found liability

## When would a practitioner use this?

Critical in multi-factor injury claims, intervening medical treatment cases, and professional negligence quantum/scope disputes.

## Quick reference

But-for factual cause (or material contribution where applicable) → no break in chain → kind of damage foreseeable (Wagon Mound); extent can be greater (thin skull). Professional/economic loss: scope of duty (Manchester BS / Khan). Remoteness ≠ quantification.

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*Reference material from [KTTC Legal](https://kttclegal.info/), not legal advice. Work product supports instructing solicitors and barristers under their supervision. England & Wales.*