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Causation in English law concerns the legal tests of remoteness, causation and foreseeability in the
tort A tort, in common law In law, common law (also known as judicial precedent or judge-made law, or ) is the body of law created by judges and similar quasi-judicial by virtue of being stated in written opinions. ' is the most-used legal dict ...

tort
of negligence. It is also relevant for
English criminal law English criminal law concerns offences, their prevention and the consequences, in England and Wales England and Wales () is a legal jurisdiction covering England and Wales, two of the four countries of the United Kingdom, parts of the United K ...
and
English contract law English contract law is the body of law that regulates legally binding agreements in England and Wales England and Wales () is a legal jurisdiction covering England and Wales, two of the four countries of the United Kingdom, parts of the United ...
. In the
English law English law is the common law In law, common law (also known as judicial precedent or judge-made law, or case law) is the body of law created by judges and similar quasi-judicial tribunals by virtue of being stated in written opinions. ''Blac ...
of
negligence Negligence (Lat. ''negligentia'') is a failure to exercise appropriate and/or ethical ruled care expected to be exercised amongst specified circumstances. The area of tort A tort, in common law In law, common law (also known as judicial ...

negligence
, causation proves a direct link between the
defendant In court proceedings, a defendant is a person A person (plural people or persons) is a being that has certain capacities or attributes such as reason Reason is the capacity of consciously applying logic Logic is an interdisciplinary fi ...
’s
negligence Negligence (Lat. ''negligentia'') is a failure to exercise appropriate and/or ethical ruled care expected to be exercised amongst specified circumstances. The area of tort A tort, in common law In law, common law (also known as judicial ...

negligence
and the
claimant A plaintiff ( Π in legal shorthand) is the party who initiates a lawsuit A lawsuit is a proceeding by a party or parties against another in the civil Civil may refer to: *Civic virtue, or civility *Civil action, or lawsuit *Civil aff ...
’s loss and damage. For these purposes, liability in
negligence Negligence (Lat. ''negligentia'') is a failure to exercise appropriate and/or ethical ruled care expected to be exercised amongst specified circumstances. The area of tort A tort, in common law In law, common law (also known as judicial ...

negligence
is established when there is a
breach BREACH (a backronym A backronym, or bacronym, is an acronym formed from a word that existed prior to the invention of the backronym. Unlike a typical acronym, in which a new word is constructed from a phrase, the phrase corresponding to the backr ...
of the
duty of care In tort law A tort, in common law In law, common law (also known as judicial precedent or judge-made law, or case law) is the body of law created by judges and similar quasi-judicial tribunals by virtue of being stated in written opinions ...
owed by the defendant to the claimant that causes loss and damage, and it is reasonable that the defendant should compensate the
claimant A plaintiff ( Π in legal shorthand) is the party who initiates a lawsuit A lawsuit is a proceeding by a party or parties against another in the civil Civil may refer to: *Civic virtue, or civility *Civil action, or lawsuit *Civil aff ...
for that loss and damage.


Public policy

Policy at this level is less than ''ordre public'', but nevertheless significant. The policy is to give bound to the scope of people who can claim damages, how much they can claim, and within what timeframe. The claimant must prove that the breach of the duty of care caused actionable damage. The test for these purposes is a balance between proximity and remoteness: *that there was a factual link between what the defendant did or failed to do, and the loss and damage sustained by the claimant, and *that it was reasonably foreseeable at the relevant time that this behaviour would cause loss and damage of that type. To clarify the nature of the judicial process, in ''Lamb v Camden LBC'' (1981) QB 625,
Lord Denning Alfred Thompson "Tom" Denning, Baron Denning, (23 January 1899 – 5 March 1999) was an English lawyer and judge. He was called to the bar The call to the bar (rarely, call to bar) is a legal term of art Jargon is the specialized termi ...
said: :"The truth is that all these three – duty, remoteness and causation – are all devices by which the courts limit the range of liability for negligence . . . All these devices are useful in their way. But ultimately it is a question of policy for the judges to decide." In other words, the court's main task is to do
justice Justice, in its broadest sense, is the principle that people receive that which they deserve, with the interpretation of what then constitutes "deserving" being impacted upon by numerous fields, with many differing viewpoints and perspectives, ...

justice
as between these
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in their present situation. For this purpose, a weighing evaluative process is required, rather than a clear-cut rule of law. For example, in ''Meah v McCreamer and others (No. 2)'' (1986) 1 AER 943, the claimant suffered head injuries and brain damage as a result of the defendant's negligent driving, which led to a
personality disorder Personality disorders (PD) are a class of mental disorder A mental disorder, also called a mental illness or psychiatric disorder, is a behavioral or mental pattern that causes significant distress or impairment of personal functioning. ...
. Four years later, he sexually assaulted and raped three women. The illegal nature of his conduct was not raised at the
civil trial Civil may refer to: *Civic virtue Civic virtue is the harvesting of habit (psychology), habits important for the success of a society. Closely linked to the concept of citizenship, civic virtue is often conceived as the dedication of citizens ...
, and the claimant was held entitled to
damages At common law In law, common law (also known as judicial precedent or judge-made law, or case law) is the body of law created by judges and similar quasi-judicial tribunals by virtue of being stated in written opinions. ''Black's Law Dictionary ...
to compensate him for being imprisoned following his
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. In separate proceedings, the three women assaulted obtained a judgment for compensation, so he sought indemnification from the negligent driver and his insurers for the amounts he had been ordered to pay. This was not a claim for his own personal injuries nor direct financial loss, but indirect loss. The three women could not have sued the driver directly because they were not foreseeable and so no duty of care was owed to them. The question was whether a person convicted of a crime was entitled to be indemnified against the consequences of that crime. Woolf J. held that the action would be dismissed on two grounds. First, the damages were too remote to be recoverable and, if such actions were to be allowed, it would leave insurers open to indefinite liability for an indefinite duration. Secondly, as a matter of policy, defendants should not have a right to be indemnified against the consequences of their crimes. In ''Clunis v Camden and Islington Health Authority'' (1998) QB 978 the claimant had been discharged from hospital where he had been detained under s3 Mental Health Act 1983. He was to receive aftercare services in the community under s117 Act 1983, but his mental condition deteriorated and, two months later, he fatally stabbed a stranger at a London Underground station. He pleaded guilty to
manslaughter Manslaughter is a common law In law, common law (also known as judicial precedent or judge-made law, or case law) is the body of law created by judges and similar quasi-judicial tribunals by virtue of being stated in written opinions. ''Black ...
on the ground of
diminished responsibility In criminal law Criminal law is the body of law Law is a system A system is a group of Interaction, interacting or interrelated elements that act according to a set of rules to form a unified whole. A system, surrounded and i ...
and was ordered to be detained in a secure hospital. Subsequently, he brought an action against his local health authority for negligence. The health authority applied to strike out the claim as disclosing no cause of action on two grounds. First, that the claim arose out of the health authority's statutory obligations under s117 Act 1983 and those obligations did not give rise to a common law duty of care. Secondly, that the claim was based on the plaintiff's own criminal act. In the
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, the health authority's appeal was allowed on both grounds.


The factual test of causation

The basic test for establishing causation is the "but-for" test in which the defendant will be liable only if the claimant’s damage would not have occurred "but for" his negligence. Alternatively, the defendant will not be liable if the damage would, or could on the
balance of probabilities Burden of proof is a legal duty that encompasses two connected but separate ideas that apply for establishing the truth of facts in a trial before tribunals in the United States: the "burden of production" and the "burden of persuasion." In a leg ...
, have occurred anyway, regardless of his or her negligence. To understand this, a distinction has to be made between cause and a precondition for the events. Lord Hoffmann in '' South Australia Asset Management Corp v York Montague Ltd'' gave a classic example.
"A mountaineer about to undertake a difficult climb is concerned about the fitness of his knee. He goes to a doctor who negligently makes a superficial examination and pronounces the knee fit. The climber goes on the expedition, which he would not have undertaken if the doctor had told him the true state of his knee. He suffers an injury which is an entirely foreseeable consequence of mountaineering but has nothing to do with his knee."
The doctor's negligence does result in the mountaineer running a risk which he otherwise would not have done, but this is insufficient to incur liability. The purpose of the doctor's duty to take care is to protect the mountaineer against injuries caused by the failure of the knee, not rock falls. Even though the injury might be reasonably foreseeable, the doctor is not liable. In ''The Empire Jamaica'' (1955) 1 AER 452, the owners sent their ship to sea without properly licensed officers. The pilot fell asleep, and a collision occurred. Though the pilot was negligent at the time, he was generally competent. Thus the question for the courts was: were the owners liable for the collision because they sent their ship to sea without properly licensed officers? Or was the factual precondition superseded by the question as to the competence of the pilot? There is no question that sending the ship to sea is "a cause" of the collision. The legal question is whether it is "the cause". This is a question that the courts treat as objective, addressed by evidence and argument. Hart and Honoré (1985) describe the process for establishing legal causation as constructing a parallel series of events (counterfactual situation), and comment: "the parallel series is constructed by asking what the course of events would have been had the defendant acted lawfully." Thus, the owners were not liable. Although they sent the ship to sea without licensed officers (what actually transpired) rather than with licensed officers (the lawful course), the cause of collision was failing to navigate a safe passage. As to the pilot, his lack of licence did not bear on his general competence. The significant factor was the pilot's negligence at the time, and the pilot's lack of license made no difference there. Had the pilot been licensed, he would have been no less likely to sleep. The license would not have awoken him. The owners were, therefore, exonerated on grounds that whether or not the pilot held a license made no difference to the real cause, which was not the pilot's general level of competence, but rather his negligence at the time. Similarly, in
Christopher Andrews v Barnett Waddingham LLP and RAJ Waddingham
' (2006) EWCA Civ 93, the claimant transferred from a "safe" employer's pension scheme to a commercial scheme on the advice of a firm of financial advisers. The breach of duty alleged was confined to advice about the protection afforded by the Policyholders Protection Act 1975 to "with-profits" annuities, and this duty was found to be breached by the first instance judge. The claimant would not have chosen the Equitable Life with-profits annuity if he had been given correct advice, but that did not entitle him to recover the loss he had sustained as a result of his acquiring the annuity. The 1975 Act would have applied if Equitable Life had become insolvent. That was not the case. The real cause of the loss was that the terminal bonuses were not guaranteed and were adversely affected by the downturn in Equitable Life's fortunes. So the negligence as pleaded and as found by the judge did not relate to the fact that the terminal bonuses were not guaranteed. In

' (1998) 1 WLR 1189 the Lords were asked to determine the cause of
repetitive strain injury A repetitive strain injury (RSI) is an injury to part of the musculoskeletal The human musculoskeletal system (also known as the human locomotor system, and previously the activity system) is an organ system An organ system is a biologica ...
in a typist.
Lord Steyn Johan van Zyl Steyn, Baron Steyn, Privy Council of the United Kingdom, PC (15 August 1932 – 28 November 2017) was a South African-United Kingdom, British judge, until September 2005 a Law Lord. He sat in the House of Lords as a crossbencher. ...
posed the question, "That immediately raises the point that there must be an explanation for the fact that she contracted PDA4. What was the cause of her PDA4? There really was no alternative on the evidence to concluding that this condition was caused by Miss Pickford's typing work." But alternative explanations are that typing might aggravate an inherent condition or generally be an unsuitable occupation for someone with a predisposition to that condition, and neither proves the legal cause. In all cases, the burden of proof is on the claimant to prove the cause as pleaded. There is no burden on the defendant to prove an alternative explanation of the cause of any loss or damage, but a failure to do so may be a factor in deciding whether the claimant's explanation of the cause should be accepted. This test works well in straightforward situations, but it proves less successful in establishing causation in more complex situations where a number of actual or potential causes operate either consecutively or concurrently. For example, in '' Robinson v Post Office'' (1974) 1 WLR 1176 following an accident at work, the claimant had an anti-tetanus injection. Nine days later, there was an adverse reaction to the serum and brain damage resulted. No matter what tests the doctor might have performed, there would have been no sign of an adverse reaction within a reasonable time (see the
Bolam Test ''Bolam v Friern Hospital Management Committee''
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1 WLR 582 is an English tort law case that lays down the typical rule for assessing the appropriate standard of reasonable care in negligence cases involving skilled professionals such as doc ...
). The doctor's reasonable decision to provide the standard treatment was therefore not the relevant cause of the brain damage because the claimant would not have been injected "but for" the defendant's negligence. Thus, in deciding between sequential contributions to the final result, the court must decide which is the more substantial contribution.


Breaking the chain of causation


Acts of a third party

Whether the acts of a third party break the chain of causation depends on whether the intervention was foreseeable. The general rule is that the original defendant will be held responsible for harm caused by a third party as a direct result of his or her negligence, provided it was a highly likely consequence. So, for example, where the defendant has control over the third party, or where the third party is faced with a dilemma created by the defendant, the chain of causation is unlikely to be broken and the defendant will normally be liable to the claimant for the damage caused: '' Home Office v. Dorset Yacht Co Ltd.'' [1970] AC 1004. The continuity of liability is not imposed merely because the original negligence makes damage by the third party foreseeable, but where the defendant’s negligence makes it very likely that the third party will cause damage to the claimant: ''Lamb v. Camden LBC'' [1981] QB 625. In practice, however, the requirement that the third party intervention will usually break the chain and, at the very least, the liability to pay compensation representing the totality of the loss or damage will be apportioned between the two or more tortfeasors. So, for example, if A injures V, it is foreseeable that an ambulance will be called, that paramedics will lift and carry V, and that there will be a journey back to the hospital. This cycle of intervention is continued in the hospital. None of this activity affecting V would arise "but for" the original negligence so A will remain liable unless and until either an unforeseeable B intervenes (e.g. negligently drives his car and collides with the ambulance), or a paramedic or member of the hospital staff is so seriously negligent that it becomes a new cause of action.


Acts of the claimant


Remoteness


Loss of a chance

In loss of chance cases, the court is invited to assess hypothetical outcomes, either affecting the claimant or a third party where the defendant's negligence deprived the claimant of the opportunity to obtain a benefit or avoid a loss. Although it has been relatively unsuccessful in cases of medical negligence, it does provide a remedy in professional negligence generally.


Loss of a right

Recent medical negligence cases suggest tacit recognition of a more rights-based approach to damage.


Causation: law and science compared

Science and law have different functions but share striking similarities. Both purport to provide rational, reasoned, independent, unbiased processes concerned with the objective assessment of evidence. There are also striking differences. Scientific assertions compared with determinations of legal causation have the following characteristics: * they are population-based, not individual; general not particular; * they are probabilistic, not deterministic; * they are generally expressed as the refutation of the hypothesis and not a finding of fact or proof of an allegation; * the evidence is not exhaustive, whereas an adjudication is determined according to the evidence available. The major distinction between legal determinations and scientific assertions lies in the concept of certainty. The legal concept of causation is deterministic: it is an expression of the fiction of certainty, an absolute concept. The scientific concept of causation is probabilistic: it is an expression of the uncertainty of truth, an asymptotic concept.


References

*Cane, Peter. (1999). ''Atiyah’s Accidents, Compensation and the Law''. Sixth edition, Chapter 5. Cambridge: Cambridge University Press. *Deakin, Simon; Johnston, Angus & Markesinis, B. S. (2003). ''Markesinis and Deakin's Tort Law''. pp. 174-201. Oxford: Clarendon Press. *Hart, H. L. A. & Honore, A. M. (1985). ''Causation in the Law''. Oxford: Clarendon Press. *The Law Commission. (2001). ''The Illegality Defence in Tort''. Consultation Paper No 16

*Luckham, Mary. "Informed consent to medical treatment and the issue of causation: the decision of the House of Lords in Chester v Afshar [2004] UKHL 41

*Robinson, Robert C, ''The Role of Causation in Decision of Tort Law'', Journal of Law, Development, and Politics 2010 Volume I Issue I

*Rogers, W. V. H. ''Winfield and Jolowicz on Tort'', pp. 195-231. London: Sweet & Maxwell. *Stevens, Robert. ''An Opportunity to Reflect'

*Weir, Tony. (2002). ''Tort Law''. Chapters 4 & 5. Oxford: Oxford University Press. *Clinical Negligence, edited by Powers Harris Barton, fourth edition 2008, Tottel Publishing; .]


See also

* Damages


Notes

{{reflist, 2 English tort law Causality