Facts
- The claimant, a 13-year-old girl, was involved in a road traffic accident after stepping into the road from behind a minibus.
- The defendant, who was driving a car, struck the claimant and was found to have been driving too fast.
- The lower court initially assessed the claimant’s contributory negligence at 90%, later reduced to 70% upon appeal.
- The defendant appealed to the Supreme Court, disputing the apportionment and arguing that the claimant bore full responsibility for not checking for traffic before crossing.
- The Supreme Court had to determine both the existence and appropriate extent of the claimant’s contributory negligence.
Issues
- Whether the claimant’s actions constituted contributory negligence and, if so, to what extent damages should be apportioned.
- How to properly balance the causative potency and blameworthiness of each party’s conduct in apportioning liability.
- Whether the lower courts’ assessment of the claimant’s contributory negligence was excessive or outside a reasonable margin of disagreement.
Decision
- The Supreme Court found that both the claimant and the defendant were negligent and that their actions contributed equally to the accident.
- The court held that apportionment requires consideration of both the causative potency and relative blameworthiness of each party’s actions.
- It decided the lower courts had apportioned too great a degree of responsibility to the claimant.
- The claimant’s contributory negligence was reduced to 50%, finding this reflected an equitable balance given the facts.
- The court reiterated that appellate interference with apportionment decisions is only justified if the lower court’s assessment is beyond reasonable disagreement.
Legal Principles
- Contributory negligence involves both the causative potency of the parties’ conduct and their respective blameworthiness.
- Apportionment of liability is a qualitative, not quantitative, “rough and ready exercise.”
- Child claimants are assessed against a standard suitable for their age, but as they near adolescence, their responsibility increases.
- Appellate courts should only intervene in apportionment decisions where there has been an error of law or the decision falls outside reasonable disagreement.
- The case distinguishes between standards applied to children of different ages (as seen by comparison with Yachuk v Oliver Blais Co Ltd [1949] AC 386).
Conclusion
The Supreme Court in Jackson v Murray [2015] UKSC 5 confirmed that contributory negligence apportionment requires a balanced consideration of blame and causation, applying an age-appropriate standard for child claimants and limiting appellate interference to instances of manifest error.