Homicide Offences in English Criminal Law
Introduction
Homicide is the unlawful killing of a human being. English law distinguishes between murder, voluntary manslaughter, and involuntary manslaughter, with different mental elements and defences determining the categorisation. Murder carries a mandatory life sentence, while manslaughter is punishable by a discretionary sentence. The law of homicide has been the subject of significant judicial development and legislative reform, particularly in relation to the partial defences to murder and the law of gross negligence manslaughter.
Murder
Murder is defined as the unlawful killing of a reasonable creature in being under the Queen’s peace with malice aforethought. The actus reus requires the unlawful killing of a human being caused by the defendant’s act. The victim must be a “reasonable creature in being” — a person who has been born alive and has not yet died. The killing must be “under the Queen’s peace,” which excludes killing in the course of war or lawful execution.
The mens rea of murder is malice aforethought, which means an intention to kill or an intention to cause grievous bodily harm. The intention may be direct (the defendant’s purpose is to kill or cause GBH) or oblique (the jury may find intention where death or GBH was a virtual certainty and the defendant realised that to be the case, following R v Woollin (1999)).
The mandatory life sentence for murder has been the subject of considerable controversy. The Law Commission has recommended reforming the law of murder to introduce a structured sentencing framework, but successive governments have not implemented reform.
Voluntary Manslaughter
Voluntary manslaughter arises where the defendant has the actus reus and mens rea for murder but successfully raises a partial defence that reduces the offence to manslaughter. The partial defences are diminished responsibility, loss of control, and suicide pact.
Diminished responsibility is governed by section 2 of the Homicide Act 1957, as amended by the Coroners and Justice Act 2009. The defendant must prove that they were suffering from an abnormality of mental functioning arising from a recognised medical condition, which substantially impaired their ability to understand the nature of their conduct, to form a rational judgment, or to exercise self-control, and which provides an explanation for the killing. The defence was successfully raised in R v Ahluwalia (1992), where the Court of Appeal recognised that battered woman syndrome could constitute an abnormality of mental functioning.
Loss of control replaced the common law defence of provocation under sections 54 and 55 of the Coroners and Justice Act 2009. The defence requires that the defendant’s acts resulted from a loss of self-control, that the loss of self-control had a qualifying trigger, and that a person of the defendant’s sex and age with a normal degree of tolerance and self-restraint and in the circumstances of the defendant might have reacted in the same or a similar way. The qualifying triggers are: a fear of serious violence from the victim against the defendant or another identified person; and things done or said that constituted circumstances of an extremely grave character and caused the defendant to have a justifiable sense of being seriously wronged.
Involuntary Manslaughter
Involuntary manslaughter arises where the defendant causes death without the mens rea for murder. There are two principal forms: unlawful act manslaughter and gross negligence manslaughter.
Unlawful act manslaughter (also known as constructive manslaughter) requires that the defendant commit an unlawful act that is dangerous (in the sense that a reasonable person would recognise the risk of some harm) and that causes death. The mens rea relates to the unlawful act, not to death. In R v Church (1966), the Court of Appeal held that the unlawful act must be such as all sober and reasonable people would inevitably recognise as subjecting another to the risk of some harm, albeit not necessarily serious harm.
Gross negligence manslaughter requires the defendant to owe a duty of care to the deceased, to breach that duty, and for the breach to cause death in circumstances where the breach was so grossly negligent as to amount to a criminal act or omission. The test, established in R v Adomako (1995), requires the jury to consider whether the defendant’s conduct fell so far below the standard of care expected of a reasonable person that it should be judged criminal. The degree of negligence required is high — it must be something more than mere compensation and must show a disregard for the life and safety of others.
Corporate Manslaughter
The Corporate Manslaughter and Corporate Homicide Act 2007 created a new offence of corporate manslaughter, applicable where the way in which an organisation’s activities are managed or organised by senior management causes a person’s death and amounts to a gross breach of a relevant duty of care. The offence replaces the common law offence of gross negligence manslaughter for corporations and addresses the difficulties of applying the identification principle to large organisations.
Conclusion
The law of homicide in England reflects a complex hierarchy of offences and defences, with murder at the apex carrying a mandatory life sentence, voluntary manslaughter providing partial defences for defendants with diminished responsibility or who acted under loss of control, and involuntary manslaughter covering unlawful killings that do not meet the mental element for murder.