Quick answer: Volenti non fit injuria (consent) is a complete defence: the claimant freely and knowingly accepted the risk of harm, so they get nothing. Contributory negligence is a partial defence under the Law Reform (Contributory Negligence) Act 1945: the claimant’s own carelessness contributed to their damage, so compensation is reduced by a percentage.
General defences are topic 4.4.1 of Paper 4 (Law of Tort) in the Cambridge 9084 syllabus. They apply across torts, especially negligence and occupiers’ liability, so almost every problem question gives you a chance to use them.
Volenti Non Fit Injuria
The Latin phrase means “to a willing person, no injury is done”. If it succeeds, the claimant recovers no damages at all.
Requirements
- Knowledge of the precise risk – the claimant must fully understand the nature and extent of the risk.
- Voluntary acceptance – the claimant must have freely chosen to accept it, with a genuine choice.
Key cases
- Smith v Baker & Sons (1891) – a worker knew stones were swung over his head by a crane, but continuing to work out of economic pressure was not voluntary acceptance. Volenti rarely succeeds against employees.
- ICI v Shatwell (1965) – two experienced shot-firers deliberately broke safety rules; volenti succeeded against their employer’s vicarious liability.
- Morris v Murray (1991) – the claimant drank heavily with a pilot and then flew with him; volenti succeeded because the risk was obvious and extreme.
- Haynes v Harwood (1935) – rescuers are not treated as volunteers; a police officer injured stopping runaway horses was not volenti.
- Reeves v Commissioner of Police (2000) – volenti did not apply where the police had a duty to prevent the very act (a prisoner’s suicide).
Statutory limits
- Road Traffic Act 1988, s149 – volenti cannot be used against passengers in motor vehicles where insurance is compulsory.
- Unfair Contract Terms Act 1977, s2(1) – a business cannot use a notice or term to exclude liability for death or personal injury caused by negligence.
Contributory Negligence
Before 1945, contributory negligence was a complete defence, which was harsh on claimants. Section 1 of the Law Reform (Contributory Negligence) Act 1945 now allows the court to reduce damages “to such extent as the court thinks just and equitable having regard to the claimant’s share in the responsibility for the damage”.
What the defendant must prove
- The claimant failed to take reasonable care for their own safety.
- That failure contributed to their damage (not necessarily to the accident itself).
Key cases
- Froom v Butcher (1976) – failure to wear a seatbelt: damages reduced by 25% if wearing one would have prevented the injury, 15% if it would have made the injuries less severe.
- Owens v Brimmell (1977) – a passenger who knowingly rode with a drunk driver had damages reduced.
- Sayers v Harlow UDC (1958) – a woman trapped in a faulty public toilet was injured climbing out using a spinning toilet roll holder; damages reduced by 25%.
- Jones v Livox Quarries (1952) – riding on the back of a vehicle against instructions; damages reduced even though the injury came from a different vehicle.
- Gough v Thorne (1966) – a young child is judged by the standard of a reasonable child of that age, so a 13-year-old was not contributorily negligent.
- Jayes v IMI (Kynoch) (1985) – the Court of Appeal allowed a 100% reduction, but in Pitts v Hunt (1991) it was held that a 100% reduction is not possible, because the Act assumes both parties share responsibility.
Illegality (Ex Turpi Causa)
A claimant who is injured while taking part in a crime may be denied a remedy. In Pitts v Hunt (1991), a pillion passenger who encouraged a drunk, unlicensed rider to drive dangerously could not recover. The Supreme Court in Patel v Mirza (2016) set a more flexible policy-based approach to illegality.
Volenti vs Contributory Negligence
| Volenti | Contributory negligence | |
|---|---|---|
| Type | Complete defence | Partial defence |
| Effect | No damages | Damages reduced by a percentage |
| Source | Common law | Law Reform (Contributory Negligence) Act 1945 |
| How often it succeeds | Rarely | Very often |
Evaluation
- Courts prefer contributory negligence because it is fairer to share responsibility than to leave the claimant with nothing.
- Volenti protects personal choice but is narrowly applied, especially for employees, rescuers and passengers.
- The percentage reductions under the 1945 Act can seem arbitrary, but they give judges flexibility.
Use these defences with negligence, occupiers’ liability and causation and remoteness, and revise the full paper with the free Paper 4 tort notes.
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Frequently Asked Questions
What is volenti non fit injuria?
It is a complete defence in tort where the claimant, with full knowledge of the risk, voluntarily accepted it. If it succeeds, the claimant receives no damages.
What is contributory negligence?
It is a partial defence under the Law Reform (Contributory Negligence) Act 1945 where the claimant's own lack of care contributed to their damage, so their damages are reduced by a just and equitable percentage.
What did Froom v Butcher decide?
That failing to wear a seatbelt is contributory negligence, usually reducing damages by 25% if a seatbelt would have prevented the injury and 15% if it would have reduced it.
Can volenti be used against a passenger in a car?
No. Section 149 of the Road Traffic Act 1988 prevents volenti being used against passengers where motor insurance is compulsory, though contributory negligence can still apply.
Final Thought
In any tort problem question, finish by checking defences. Contributory negligence is the one you will use most often, while volenti needs clear evidence of full knowledge and a free choice. Learn two or three cases for each and you will secure easy application marks.