Homicide Flashcards
(209 cards)
A defendant will be criminally liable for voluntary manslaughter if the defendant:
Committed the actus reus of murder: The defendant unlawfully killed another human being
under the Queen’s peace; and
* Committed the mens rea of murder: The defendant committed the actus reus with malice
aforethought, meaning intention to kill or intention to cause grievous bodily harm; and
* Can rely on one of the special defences to murder: Loss of control or diminished responsibility.
- Homicide overview
Homicide is an umbrella term used to describe a set of offences where the defendant has killed a victim. Homicide includes murder, voluntary manslaughter and involuntary manslaughter.
Voluntary manslaughter
This is where the defendant has satisfied the actus reus and mens
rea of murder, but murder conviction is reduced to voluntary manslaughter by way of diminished responsibility or loss of control.
Involuntary manslaughter
This is where the defendant has killed the victim, but lacks the
mens rea of murder.
Loss of control and diminished responsibility
The defendant will be criminally liable for voluntary manslaughter rather than murder, so these are partial rather than complete defences, in that the defendant is not acquitted. The defendant is not given a
mandatory life sentence but the judge has discretion in sentencing
Diminished Responsibility
In contrast, with diminished responsibility the defence must prove on the balance of probabilities that the partial defence applies - one of the few instances in criminal law where the burden of proof rests with the defence.
Diminished Responsibility
The defendant will be
criminally liable for voluntary manslaughter rather than murder, so these are partial rather than
complete defences, in that the defendant is not acquitted
Judge’s Discretion
The defendant is not given a
mandatory life sentence but the judge has discretion in sentencing. It is worth noting that once the defence of loss of control is raised it is up to the prosecution to prove beyond reasonable doubt that the partial defence does not apply
Legal Analysis of a Client-Based Problem
- Has the defendant unlawfully killed another human under the Queen’s peace with intention to
kill or intention to cause grievous bodily harm? - If not, the defendant is not liable for murder.
- If so, consider the next question.
Legal Analysis of a Client-Based Problem
- Can the defendant rely on a complete defence such as self-defence? We consider complete
defences first, as the defendant will be acquitted if successful. - If so, the defendant is not liable for murder.
- If not, consider the next question.
Legal Analysis of a Client-Based Problem
- Can the defendant rely on the partial defence of loss of control or diminished responsibility?
- If not, the defendant is liable for murder.
- If so, the defendant is liable for voluntary manslaughter.
- Voluntary manslaughter: Diminished Responsibility
Diminished responsibility is one of the two special defences to murder. ‘Special defence’ means
diminished responsibility can only be used as a defence to murder, no other offences.
Partial Defense
Diminished responsibility is a partial defence, meaning if it is successful, the defendant is not acquitted but convicted of a lesser offence, known as voluntary manslaughter (s2(3) Homicide Act 1957 (HA)). This means that the judge will have discretion in sentencing and the defendant will
avoid the mandatory life sentence handed down to those convicted of murder (Murder (Abolition of Death Penalty) Act 1965).
Burden falls upon the defence
The burden falls upon the defence to prove on the balance of probabilities that the defendant was acting under diminished responsibility (s 2(2) HA). Diminished responsibility is not available as a defence to a charge of attempted murder (R v Campbell [1997] Crim LR 495).
Section 2(1) HA 1957 (as amended by s 52 CJA 2009)
Section 2(1) Homicide Act 1957 (as amended by the s52 CJA 2009) provides:
(1) A person (“D”) who kills or is a party to the killing of another is not to be convicted of murder
if D was suffering from an abnormality of mental functioning which-
(a) arose from a recognised medical condition,
(b) substantially impaired D’s ability to do one or more of the things mentioned in
subsection (1A), and
(c) provides an explanation for D’s acts and omissions in doing or being a party to the killing.
(1A) Those things are—
(a) to understand the nature of D’s conduct;
(b) to form a rational judgment;
(c) to exercise self-control.
Abnormality of mental functioning
(1B) For the purposes of subsection (1)(c), an abnormality of mental functioning provides an
explanation for D’s conduct if it causes, or is a significant contributory factor in causing, D to
carry out that conduct.
2.2 An ‘abnormality of mental functioning’
Firstly, under s 2(1), there must be an ‘abnormality of mental functioning’.
The Coroners and Justice Act 2009 (CJA) made modest reforms to the language of diminished responsibility, for example requiring an abnormality of mental functioning rather than an abnormality of mind.
Key case: R v Byrne [1960] 2 QB 396
In the absence of any statutory definition, guidance on the meaning of abnormality of mental
functioning is taken from this case. A defendant would be suffering from an abnormality of the mind if they had a ‘state of mind so different from that of ordinary human beings that the
reasonable man would term it abnormal’.
2.3 Arising from a recognised medical condition
Secondly, under s 2(1)(a), the abnormality must arise from a recognised medical condition.
This clause has hugely simplified the defence but it is not completely straightforward. A defendant might be suffering from an undiagnosed recognised medical condition at the time of the killing which will be sufficient to satisfy this element.
Not enough to be suffering from abnormality
It is not enough to be suffering from an abnormality of mental functioning and have a recognised medical condition. The abnormality must be caused by the recognised medical condition and not by something else, such as hatred, jealousy or bad temper. Alcohol Dependency Syndrome (ADS) is a recognised medical condition
Key case: R v Dowds [2011] EWCA Crim 281
Facts: The defendant, a binge drinker, stabbed his partner after a night of heavy drinking. He
tried to run the defence of diminished responsibility on the basis that he was suffering from a
recognised medical condition, namely ‘Acute Voluntary Intoxication’. Dowds was not arguing that
he was an alcoholic and there was no evidence to suggest it.
s52 CJA
Dowds argued that the changes
made to the defence by s52 CJA meant that it was possible to raise the defence of diminished
responsibility based on voluntary intoxication because such intoxication is recognised as a
medical condition in both the World Health Organization’s International and Statistical
Classification of Diseases (ICD) and the American Medical Associations Diagnostic and Statistical
Manual (DSM).
Key case: R v Dowds [2011] EWCA Crim 281 Judgement
Held: The Court of Appeal noted that both the ICD and DSM recognised a number of medical
conditions that would give rise to significant problems if raised as issues in legal cases, including
‘unhappiness’, ‘irritability and anger’, and ‘intermittent explosive disorder’. However, they also
noted that the DSM itself, in its introduction, warned against a rigid application of the categories
of medical condition to legal issues.
Long history of legal principles
It also briefly reviewed the long history of legal principles that
showed, with exceptions, that the law generally does not allow voluntary intoxication to afford
any defence to criminal liability. They said that the changes brought about by the CJA to the
defence were recommended by the Law Commission, who nevertheless observed that generally
the law as it formerly read worked well and no major changes were required. Intoxication cannot give rise to a criminal defense.