Miller [1983] 2 AC 161 Lord Diplock:I see no rational ground for excluding from conduct capable of giving rise
to criminal liability conduct which consists of failing to take measures that lie within one’s power to counteract a
danger that one has oneself created, if at the time of such conduct one’s state of mind is such as constitutes a
necessary ingredient of the offence. I venture to think that the habit of lawyers to talk of "actus reus,"suggestive
as it is of action rather than inaction, is responsible for any erroneous notion that failure to act cannot give rise
to criminal liability in English law.
Fagan v MPC [1968] 3 All ER 442
Santana-Bermudez [2004] Crim LR 471
Statutory Omission
Children and Young Persons Act 1933 s1
Failure to act is offence of failing to look
after child under 16
Road Traffic Act 1988 s170 Failure to
stop at a road accident is an offence
Road Traffic Act 1988 s6 Failure to
provide breath sample is an offence
Causation
Factual: White [1910] 2 KB 124 "but for" test
Legal Causation
Smith [1959] 2 All ER 193 :
Operating and Substantial Cause
Substantial: Hennigan [1971] 3 All ER 133 ‘Substantial’ does not
mean a large proportion. It refers instead to anything more than a
‘de minimis’, or minimal, cause; judge should not direct jury in any
greater detail than this - e.g. requiring more than one fifth of cause
Substantial: Cato[1976] 1 All ER 260 at 265-266
(not an 'insubstantial or insignificant contribution')
Substantial: Kimsey[1996] Crim LR 35
(acceptable for judge to direct jury that cause
need not be substantial, and instead that it
must be more than 'a slight or trifling link')
Egg Shell Skull - Blaue [1975] 3 All ER 446 "It has long been the
policy of the law that those who use violence on other people
must take their victim as they find them. This in our judgment
means the whole man, not just the physical man. It does not lie in
the mouth of the assailant to say that his victim’s religious beliefs
which inhibited him from accepting certain kinds of treatment
were unreasonable. The question for decision is what caused
the death. The answer is a stab wound."
Pagett [1983] 76 Cr App R 279 (CA) Goff LJ: ‘Where it is
necessary to direct the jury’s minds to the question of causation,
it is usually enough to direct them simply that, in law, the
accused’s act need not be the sole cause or even the main
cause of (the prohibited result), it being enough that his act
contributed significantly to the result’
Intervening Acts The chain of causation will
be broken by the ‘free, deliberate and
informed’action of a third party which
renders the previous act no longer a
substantial and operative cause.
Negligent Medical Treatment
Smith [1959] 2 QB 423 If at the time of death the original wound is still an operating
cause and a substantial cause, then the death can properly be said to be the result
of the wound, albeit that some other cause of death is also operating. Only if it can
be said that the original wounding is merely the setting in which another cause
operates can it be said that the death does not result from the wound.
Cheshire [1991] 1 WLR 844 ‘Even though negligence in the treatment of the
victim was the immediate cause of his death, the jury should not regard it as
excluding the responsibility of the accused unless the negligent treatment was
so independent of his acts, and in itself so potent in causing death, that they
regard the contribution made by his acts as insignificant.’
Jordan [1956] 40 Cr App Rep 152
Third Party
Pagett [1983] 76 Cr App R 279
Environment Agency v Empress Car Co. (Abertillery) Ltd [1999] 2 AC 22
Naturally Occuring Event
R Perkins (1946) 36 J Cr L & Cr 391 at 393 ‘…if one man knocks down another and goes away
leaving his victim not seriously hurt but unconscious, on the floor of a building in which the assault
occurred, and before the victim recovers consciousness he is killed in the fall of the building which
is shaken down by a sudden earthquake, this is not homicide. The law attributes such a death to
the ‘Act of God’and not to the assault, even if it may be certain that the deceased would not have
been in the building at the time of the earthquake, had he not been rendered unconsciousness. The
blow was the occasion of the man’s being left there, but the blow was not the cause of the
earthquake, nor was the deceased left in a position of obvious danger. On the other hand, if the
blow had been struck on the seashore, and the assailant had left his victim in imminent peril of an
incoming tide which drowned him before consciousness returned, it would be homicide’
Action of Victim: Foreseeability
Roberts [1971] 56 Cr App R 95 ‘Was it the natural result of
what the alleged assailant said and did, in the sense that it
was something that could reasonably have been foreseen as
the consequence of what he was saying or doing?’
Williams [1992] 2 All ER 183 ‘V’s reaction must be ‘proportionate to the
threat, that is to say that it was within the ambit of reasonableness and
not so daft as to make it his own voluntary act which amounted to a
novus actus interveniens and consequently broke the chain of causation’