Haynes v Harwood [1935] 1 KB 146
Facts
The C Thomas John Haynes, an on duty Police Officer issued proceedings against the D G.Harwood & Son for a claim of negligence owing to injuries caused by D’s horses. A van containing two horses belonging to D was left unattended and the horses after being spooked by a boy, bolted down the street which was being occupied by members of the public which included children. The C, being on duty noticed this and attempted to slow the horses. With this attempt came injuries to the body and clothing of C.
Legal Issue
Was the defendant responsible for injuries sustained by a police officer reasonably intervening to stop runaway horses, or did his rescue amount to voluntary acceptance of the risk?
Held
The Court of Appeal upheld liability. Leaving the horses unattended in a busy street created a foreseeable danger, including the possibility that someone would attempt to protect others when they bolted. The officer's intervention was a reasonable response to that emergency and was not treated as voluntary acceptance of the defendant's negligence. The child's act in frightening the horses did not necessarily sever the causal connection with leaving them unattended. The decision recognises the reality of emergency rescue rather than treating a rescuer's conscious exposure to danger as an automatic defence. It does not establish liability for an entirely unnecessary or wholly unreasonable intervention.
⭐ Legal Principle
A person who negligently creates an emergency may owe a duty to a foreseeable rescuer. Reasonable intervention to protect others is not ordinarily treated as voluntary acceptance of the wrongdoer's negligence merely because the rescuer appreciates the danger.
Significance
Haynes is a leading illustration of rescue as a foreseeable response to danger. It distinguishes awareness of a risk from free acceptance that the defendant should bear no responsibility for it. The officer's professional role reinforced the context but should not be converted into a rule that only professional rescuers can recover. The case also shows why foreseeable third-party conduct and a reasonable rescue do not automatically break the chain of causation.
Common exam questions about this case
Why did knowledge of the horses' danger not establish volenti?
The officer intervened in an emergency to protect others. Appreciating the physical risk was not equivalent to freely agreeing that the negligent defendant should bear no liability. The law recognises that rescue decisions are made under pressure created by the danger, rather than as ordinary voluntary recreation.
Did the child's intervention necessarily break causation?
No. Frightening unattended horses in a busy street was within the risks making the defendant's conduct dangerous. An intervening human act does not automatically sever liability simply because it contributes to the event. Its relationship to the original risk and the foreseeability of the sequence matter.
Must a rescuer be a police officer to recover?
No. The principle concerns reasonable rescue prompted by a danger the defendant created. Professional duty can explain why intervention occurred, but ordinary people may also be foreseeable rescuers. The circumstances and reasonableness of the attempt matter more than a categorical distinction between employed and voluntary rescuers.