In every crime there is what amounts to a set of ingredients which must be established before a verdict of guilty can be returned
Elements of a crime
the actusreus (the guilty action')
the mensrea (the guilty mind')
Actus reus
The external features of a crime
Mens rea
The internal features of a crime
Every crime always involves the prosecution establishing the actus reus beyond a reasonable doubt
Some acts may be part of the actusreus of different crimes - depending upon its consequences
Actus reus of rape
the accused having unlawful sexual intercourse
with a woman or another man
without consent
If the person was consenting even though the accused thought he/she wasn't then the actus reus is insufficient (although this is sufficient actus reus for attempted rape)
Liability may also arise in limited circumstances through a failure to act and so actus reus can cover both acts and omissions
Any crime usually involves
some conduct
a prohibited consequence
certain surrounding circumstances
Voluntary
Actus reus must be voluntary (willed by the defendant)
Actus reus will usually only be considered involuntary where the accused was either a) not in control of his or her own body through illness or b) where forced to do something by threat of being killed
Lord Denning confined involuntary behaviour to "acts done whilst unconscious and to spasms, convulsions and reflex actions"
If the defendants had been insane or if the involuntary nature of the act had been through drugs or alcohol then the results would have been different
Crimes can be divided into four types depending upon the nature of their actus reus
action crimes
state of affairs crimes
result crimes
crimes of omission
Action crimes
The actus reus is simply an act - the consequences being immaterial
State of affairs crimes
The actus reus consists of circumstances rather than acts
Result crimes
The accused's behaviour must produce a particular result
Crimes of omission
Criminal liability is rarely imposed for true omissions at common law, the general rule being that there is no liability for an omission
There are exceptions where what may appear to be an omission is in law treated as an act, such as continuing acts, supervening fault, and euthanasia
There are also a number of exceptions where a duty to act is imposed, such as parent and child, cohabitee and child, public office, parties to contracts, and voluntary responsibility
Law reform in this area is unlikely because it is often difficult to distinguish an act from an omission, a general duty to act might impose liability on a large number of people and overextend the frontiers of criminality, a general duty to act may cause people to over interfere in their neighbours business, and a general duty to act may give rise to problems with causation
The actus reus must be voluntary, intentional or reckless
Actus Reus is the physical element of an offence
Voluntariness requires that the defendant acted willingly and not under duress
Intentional conduct involves acting with the purpose of causing harm or realising that harm was likely to occur
Recklessness occurs when the defendant appreciates that serious harm is a virtual certainty but proceeds anyway
Involuntariness can negate either the actus reus or mensrea
Intentional means that the defendant intended the consequence of his actions
Recklessness occurs when the defendant acts without considering the risk of harm occurring
Involuntariness can arise due to intoxication, automatism, mistake, insanity, or lack of capacity
Automatism refers to acts committed without conscious control due to factors such as sleepwalking, epilepsy, hypoglycaemia, or other medical conditions.
Necessity is a defence whereby the accused's actions were necessary to prevent greater harm from occurring.
Duress is a defence whereby the accused's actions were caused by threats of death or serious injury against themselves or another person.
Negligent means that the defendant failed to take reasonable care, resulting in death or injury
Causation refers to whether the defendant's actions caused the victim's injuries
Direct causation exists if the defendant's actions were the sole cause of the victim's injuries
Negligence refers to an omission, where the defendant failed to take reasonable care
The standard of negligence required depends on whether it is gross negligence manslaughter (GNM) or ordinary negligence manslaughter (ONM)