Home Office v Dorset Yacht Co [1970] AC 1004
Facts
Borstal trainees were working on Brownsea Island under the supervision of officers employed by the Home Office. The officers allegedly failed to maintain the required control overnight. Trainees escaped and used nearby yachts, damaging property belonging to Dorset Yacht. The company alleged negligent supervision by the officers. The Home Office accepted that it would be vicariously responsible if the officers owed and breached an actionable duty. The preliminary issue was whether the assumed facts could establish such a duty concerning nearby property; the case did not concern ordinary police investigation of an unidentified offender.
Legal Issue
- A key question before the court laid in whether the appellant would be vicariously liable should action be brought against the negligence of the supervising police officers
Held
The House of Lords majority held that the alleged facts could establish a duty and dismissed the Home Office's appeal on the preliminary issue. The officers controlled the trainees and could foresee that inadequate supervision might result in escape and damage to nearby yachts. Liability was based on the officers' own alleged carelessness, attributed to their employer, rather than treating the trainees as employees. The trainees' deliberate acts did not automatically break causation where they were the very risk requiring supervision. The decision did not finally assess damages or impose a general duty to protect every person from all released or escaped offenders.
⭐ Legal Principle
Control over a person who presents a foreseeable danger can support a duty to protect those sufficiently close to that risk. Dorset Yacht concerned alleged negligent supervision of trainees and nearby property; it did not impose general vicarious liability for the trainees' acts.
Significance
Dorset Yacht is a major exception to a simplistic statement that defendants never owe duties concerning third-party misconduct. The officers' control and the proximity of the yachts were central. Robinson later explains public-authority liability through ordinary negligence principles. The case should be contrasted with Hill's failure-to-investigate claim and accurately described as a preliminary duty ruling, rather than a completed damages award against the Home Office for every escape-related loss.
Common exam questions about this case
Were the trainees treated as Home Office employees?
No. The relevant employment relationship was between the Home Office and the supervising officers. The alleged tort was the officers' negligent failure to control the trainees. The Home Office's responsibility for that tort is different from being vicariously liable simply for every wrongful act committed by a detainee.
Why did intentional yacht damage not necessarily break causation?
The danger of escaping trainees using or damaging nearby boats was the kind of risk that supervision was intended to prevent. A deliberate third-party act does not automatically become an independent cause where it is closely connected with the original duty. The actual scope and foreseeability of the risk still matter.
Did the House of Lords finally award damages?
The decision addressed whether a duty could arise on the assumed facts at a preliminary stage. It permitted the claim to proceed rather than determining every disputed fact and assessing damages. That procedural limit is important when stating what the court actually established.