Actus reus

Two elements of a criminal offence

Actus Reus - guilty act

  • each crime requires an actus reus

Mens Rea - guilty mind

  • not all crimes require a mens rea

  • these are called crimes of strict liability

Absence of defence

actus reus and the mens rea happen at the SAME TIME fagan v metropolitan police comissioner

Elements of actus reus - the guilty act

Maxim: actus non facit reum, nisi mens sit rea

  • an act does not make a person guilty unless their mind is also guilty

  • Lord Hailsham in Haughton v Smith 1975

What can constitute an actus reus

  • the defendants physical conduct eg drunk and disorderly

  • the circumstances surrounding what happened eg possession of an offensive weapon

  • the result caused by defendants actions eg murder (the offence is only made out if the victim subsequently dies)

Actus reus by omission

  • omission - failing to act

  • under english law, there is no general duty to act

  • several exceptions where an omission may result in an actus reus

    • contractual duty

      • a duty may be imposed by virtue of a contract - this will often be an employment contract

      • pittwood 1902

        • defendant had a duty to act through his employment contract

        • level crossing operator

        • one day d went to lunch and forgot to close the gate. train came and because the gate was open someone died by the passing train

        • by virture of the employment contract, by failing to close to gate he was criminlly liable.

    • special relationship between the defendant and the victim

      • dependent upon the relationship between defendant and victim, the law may impose a duty to act

      • under defined circumstances, particularly oarent and child relationships

      • can also include a fiduciary duty

        • Gibbons and Proctor 1918

        • parents of a child who died of neglect

        • they both failed to look after their child and adequetly feed them .

        • by failing to look after their child, the child died.

        • failing to act in this relationship made them guilty.

      • does not extend as far as siblings

        • evans 2009

        • doesnt go the other way of child to their parent or to siblings

      • airedale NHS trust v Bland 1993

        • no contractual duty between the doctor and patient, but contained contractual elements

        • doctor patient relationship

        • doctor seeked permission to switch off life support for a victim of the hillsborough disaster

    • voluntary assumption of responsibility

      • a duty may arise if one person has assumed a responsibility for another - extension of the special relationship

      • can be express or implied

      • Nicholls 1874

        • grandparent was looking after their vgrandchild

        • voloiunteered to take responsibility of the child

        • child died of negect

        • because the grandparents had volounteered, there was a volountary substition of the special relationship to take care of the child

      • Stone and Dobinson 1977

        • couple who had invited s sister to live with them

        • s sister had disabilities

        • by taking on board his sister to live with him, they took responsibility to look after her

        • suffered from annorexia and was confined to bed and the defendants did nothing to help her

        • after her death they were convicted of manslaughter

        • duty of care

          • volountairly assumed responsibility gave right to potential criminal liability

      • Ruffell 2003

        • invited a friend into their home

        • the friend then overdosed on drugs

        • courts said that ruffel had assumed responsibility for the victim when he tried to revive the victim

        • close persoanl relationship is enough

          • implied and express

    • statutory duty of common law duty

      • some statutory duties require a general duty requiring individuals to carry out certain activities and failure to adhere would result in criminal liability

        • eg having a car accident, you are required to report it to the police within 24 hours

      • certain indivuduals may be under a public duty to act if they hold a position of authority

      • Dytam 1979 - a common law duty was breached, but works similarly. dytham was liable due to his occupation

        • off duty police officer was liable as a result of their occupation and common law duty applied to them

        • d saw somebody being punched to death on the street

        • as a police officer , there was a common law duty to intervene in some way eg summon help

    • creation of a dangerous situation / continuing dangerous act

      • if the defendant creates a danger, they will be under a common law duty to avert the danger that he had created

      • the creation of the dangerous situation needs to be in advertend - but omitting to rectify this must be either deliberate or reckless

      • miller 1983

        • a squatter who went to sleep in a building on a matress with a lit ciggarette in his hand

        • matress was on fire

        • left the building to saftey

        • because he had created a situation that was dangerous, by failing to avert the danger eg calling fire bridade, he had created a duty of care to others.

        • by walking away the duty was breached

      • evans 2009 - need to take reasonable steps to avert the danger that they had created

      • khan and khan 1998

Causation

  • for an offence that requires a consequence to result from the defendants conduct, the prosecution must prove causation

  • two elements

    • factual causation

    • legal causation

  • sometimes the chain of causation can be broken through a novus actus interveniens (a new interveining act)


  • it is for the prosecution to establish causation

  • But for test

context is important

  • is the accused person responsible for the consequences of their actions

  • this is a legal responsibility so we need to take into account whether this would lead to a moral injustice

  • is there a relationship between cause and effect

Factual causation

  • the defendant needs to be the factual cause of the consequences that could amount to an offence

  • the but for test

    • but for the defendants actions, the prohibited outcome would not have happened

  • importance is underlined in hughes 2013

key cases

  • there is no factual causation if the defendant was unable to prevent the consequences occuring

    • dalloway 1847

  • but for test established in white 1910

    • d had decided to kill his mother

    • did so by poisoning his mothers drink

    • she dropped dead

    • HOWEVER, v had a heart attack so the victim had not died from the poison

    • therefore the defendants behaviour was not a factor in the death of his mother

Legal causation

  • you need to take a contextual approach on a case-by-case basis. often this is more applicable to more complex cases

    • kennedy no2 2007

      • d and v were together in a room

      • d had prepared a siringe of heroin who then self injected and then died as a result of the drugs

      • in this instance the court said there was no legal causation because the victim made the decision for themselves to take the drug

      • HOWEVER

      • in wallace, the court made out that while the victim had made the decision to trvel, it was because of the action that the d had done.

      • direct decision

  • defendants actions need not be the only cause of the consequence, but needs to be a significant contribution - wallace 2018

    • d assaulted her ex partner through an acid attack

    • led to the victim having life changing injuries

    • the v then decided to travel for life changing treatment

    • following the victims death, had the d caused the death

    • her contribution was significant enough that causation was satisfied

defining significance of D’s actions

  • the defendants actions need to be more than a slight or a triffling contribution to the consequences

    • kimsey 1996

  • defendants conduct does not need to be the sole or even main cause

    • smith 1959

    • cheshire 1991

  • conduct must be the operating and substantial cause

    • smith

    • malcherek

    • steel

  • conduct must contribute significantly to the consequences

    • pagett 1983

  • d’s actions need to have made a significant contribution

    • wallace 2018

Novus actus interveniens

  • legal causation may not be satisfied if there has been a novus actus interveniens, a break in the chain of causation

  • this can occur in numerous different ways

    • the eggshell skull/thin skull rule

      • have to take the victim as you find them

      • if the victim has a pre-existing medical condition, the chain of causation will not be broken

        • hayward 1849

      • the whole person, allowed the consideration of mental conditions and religious beliefs

        • blaue 1975

    • victim intervention

      • self neglect

        • where the defendants act is an immediet cause of the consequences, the chain of causation is not broken, even if the victims own actions are contributory

          • obiter in malcherek 1981

        • where the defendants act is not an immediate cause, it is more complicated

          • dear 1996

            • suggets that when the wound is not the operating and substantial cause, but is still relevant, the chain of causation would still be broken

      • escape

        • where a victim injured themselves or accidentally dies trying to escape

        • there is no chain of causation IF the victims response is foreseeable

        • roberts 1971

          • victim jumped from a moving car and was injured. no break in the chain of causation

        • would someone in the defendants shoes have forseen this behaviour?

          • marjoram 2000

          • objective test. same age and sex (general characteristics) as defendants

    • third party intervention

      • r v a 2020

      • an act of a third party in good faith does not break the chain of causation - malcherek 1981

      • if a third party is acting out of a legal obligation, this will not break the chain of causation - pagett 1983

        • police in a hostage situation

        • standof between police and defendant

        • police shot at the d through a door and killed the victim

        • the defendant was still liable as the police were acting out of obligation it was the defendant who was liable

    • deception

      • r v field

        • befriended older man and persuaded him to change his will

        • killed him and made it look like suicide.

        • staged drinking and drugs and spoke to people as if he was having suicidal thoughts

    • negligent medical treatment

      • medical treatment does not absolve the defendant of liability

      • even if treatment is negligent, courts impose a high threshold and rearely find a break in the chain of causation - smith 1959

      • cheshire 1991

        • negligent treatment was so independent of his acts, and in itslef so potent in causing death, that they regard the contribution made by his acts as insignificant

      • jordan 1956 - particular case decided on the specific facts

    • natural events

      • an independant natrual event may break the chain of causation

      • environment agency v empress car co ltd 1999

        • an intervening natrual event only breaks the chain of causation if it is abnormal and extraordinary

  • importance

    • reaffirmed by judicial decisions

      • kennedy no 2 2007

      • wallace 2018

      • rebelo 2021

    • there are other rules which have established when legal causation might be broken