Home Office v Dorset Yacht Co Ltd

Factual and Procedural Background

On the night of 21 September 1962, a group of Borstal trainees were undertaking a supervised work exercise on The Island in The Harbour. Three Borstal officers, employed by the Appellant, a Government Department responsible for custodial institutions, were tasked with keeping the trainees under control. Contrary to their instructions, the officers retired for the night and the trainees escaped.

Seven trainees boarded a nearby yacht, set it in motion, collided with Company A’s yacht, and then boarded Company A’s vessel, causing significant damage. Company A brought negligence proceedings claiming that the officers, and therefore the Government Department vicariously, owed and breached a duty of care to protect neighbouring property from foreseeable harm.

The action reached the House of Lords solely on a preliminary issue: assuming Company A could prove the pleaded facts, did the Government Department or its officers owe any duty of care capable of founding liability in damages?

Legal Issues Presented

1. Whether custodial officers, and vicariously the Government Department, owed a common-law duty of care to neighbouring property owners to prevent foreseeable damage caused by trainees escaping from lawful custody.
2. Whether public policy or the statutory framework governing Borstal training immunised the Government Department from such liability.
3. Whether the negligent acts of escaping trainees constituted a novus actus interveniens breaking the chain of causation.
4. Whether statutory discretion concerning the management and rehabilitation of trainees precluded civil liability for negligent supervision.

Arguments of the Parties

Appellant’s Arguments

• English authority contained “virtually no precedent” for imposing a duty of care on custodial officers to protect third-party property from acts of detainees.
• No person is liable for the wrongful acts of another adult who is neither servant nor agent, and the trainees’ criminal acts constituted a new, independent cause.
• Public policy required immunity so that rehabilitative regimes would not be hampered by fear of litigation and financial exposure.
• Any obligations owed by officers were purely statutory and owed only to the Crown, not to private individuals such as Company A.

Respondent’s Arguments

• The officers’ control created a sufficiently “close and direct” relationship with neighbouring boat owners under the neighbour principle derived from Donoghue v. Stevenson.
• The damage was a likely and foreseeable consequence of abandoning supervision, especially given the trainees’ criminal records and prior escape attempts.
• Statutory authority does not excuse negligent performance; Parliament cannot be assumed to authorise careless execution of custodial powers.
• Public policy favours placing the loss on the negligent public body rather than an innocent third party.

Table of Precedents Cited

Court's Reasoning and Analysis

The majority (Judges Reid, Morris, Pearson and Diplock) held that:

• The neighbour principle applies unless cogent reasons justify exclusion; officers exercised complete control over trainees and could reasonably foresee damage to nearby vessels if supervision lapsed.
• Intervening human acts do not automatically break causation where the very act (stealing a boat and navigating poorly) was the likely result of the officers’ neglect.
• Statutory custody does not confer immunity; following Geddis, Parliament authorises detention but not negligent execution of that duty.
• Public policy favours compensating innocent victims rather than shielding a Government Department; fears of opening floodgates are unfounded.
• Escapes arising from bona fide discretionary decisions (e.g., parole) might not found liability, but simple disregard of clear custodial instructions, as pleaded, is actionable.

Judge Dilhorne dissented, emphasising the absence of direct precedent, the breadth of potential liability if recognised, and the view that policy choices on custodial regimes lie with the legislature, not the courts.

Holding and Implications

Appeal dismissed. The House of Lords recognised that custodial officers, and vicariously the Government Department, owe a duty of care to persons whose property is exposed to a foreseeable and particular risk arising from negligent supervision of detainees.

Implications: Public authorities exercising custody must take reasonable precautions against foreseeable damage to nearby third-party property. The ruling clarifies that statutory functions do not automatically create immunity and reinforces incremental expansion of negligence by analogy with established principles.