General defences Flashcards
‘Absence of a valid defence’
For a defendant to be criminally liable, they must have the actus reus and mens rea of the relevant offence, as well as the absence of a valid defence ( a justification or excuse for the defendant’s behaviour). If a valid and complete defence exists, D will not be criminally liable.
What sort of defence is intoxication and how does it work?
A general defence, meaning it is available to almost any crime. It works in two ways:
(1) As a way to negate the mens rea (so not really a defence)
(2) An influencing factor on another legal principle or defence.
How can intoxication work to negate the mens rea?
R v Woolmington - The prosecution need to prove, beyond reasonable doubt, that the defendant has committed the actus reus with the necessary mens rea. If, due to intoxication, the defendant did not form the necessary mens rea, then under certain circumstances, they may be acquitted due to lack of mens rea.
R v Bennett - The judge is obliged to direct the jury on intoxication whenever there is evidence such that a reasonable jury might conclude that there is a reasonable possibility the accused did not form the mens rea.
R v Pordage - if the accused’s intoxication does not negate the mens rea, it is not a defence for the accused to say they would not have behaved as they did but for being drunk.
R v Kingston - intoxication example
P invited K to his flat and gave him some coffee, then showed him a boy asleep on the bed and invited him to indecently assault the boy. The appellant did so. K’s defence was that he was involuntarily intoxicated as he alleged that P had drugged the coffee. The HoL held that K was liable; if he had still formed the mens rea in an intoxicated state, it was no defence to plead he would not have committed the offence when sober.
Questions to ask when considering intoxication as a way to negate the mens rea
(1) If it was involuntary intoxication - the defence might still be available, the question is: did D still form the necessary mens rea?
(2) If it is voluntary intoxication:
(a) By non-dangerous drugs - the defence might still be available, the question is: did D still form the necessary mens rea?
(b) By dangerous drugs/alcohol -
(i) For specific intent crimes - the defence might still be available, the question is: did D still form the necessary mens rea?
(ii) For basic intent crimes - would D have formed the mens rea if they were sober?
Involuntary intoxication
Where D was forced to consume alcohol or other intoxicating drugs, or was deceived into doing so (R v Kingston)
Where the defendant is aware that they are drinking alcohol, but is mistaken as to the strength of the alcohol, this will NOT count as involuntary (R v Allen)
Voluntary intoxication
DPP v Majewski - Voluntary intoxication would not be a defence to a charge of basic intent
R v Coley, McGhee and Harris - The direction for this has been changed to for the jury to consider whether the defendant would have seen the risk had they not been intoxicated.
Basic intent offences
Any offence where the defendant could be convicted on the basis of recklessness, e.g.:
- Battery
- Unlawful act manslaughter
- Gross negligence manslaughter
- Malicious wound/inflicting GBH (s 20 OAPA 1861)
- Assault occasioning ABH (s 47 OAPA 1861)
- Battery
- Assault
- Basic criminal damage and aggravated criminal damage (s 1(1) and 1(2) CDA 1971)
- Burglary under s 9(1)(b) where the defendant has fulfilled the last element by causing GBH
Specific intent offences
Where intention is the only form of mens rea available, e.g.
- Murder
- Wounding of grievous bodily harm with intent (s 18 OAPA 1861)
- Theft
- Robbery
- Burglary under s 9(1)(a)
- Burglary under s 9(1)(b) where D has fulfilled the last element by stealing, attempting to steal, or attempting to cause GBH
- Attempts
Dangerous and non-dangerous drugs
R v Hardie: drugs can be divided into 2 categories:
- Dangerous: Where it is common knowledge that a drug is liable to cause the taker to become aggressive, or do dangerous or unpredictable things. e.g. illegal drugs and alcohol
- Non-dangerous: Where there is no such common knowledge, e.g. a merely soporific or sedative drug.
In R v Hardie, the defendant took Valium and later started a fire. CoA allowed his appeal on the basis that the Valium was taken for calming his nerves, and there was no evidence that the appellant knew it would make him aggressive, incapable of appreciating risks to others or susceptible to other side effects, so as to make his taking it reckless.
Interaction between intoxication and self defence
If a defendant makes a drunken mistake as to the need to use self-defence, they cannot rely on that mistake.
Interaction between intoxication and loss of control
Intoxication is not a bar to a plea of loss of control or diminished responsibility.
Mens rea - even though intoxicated, did D form the mens rea of intention to kill or intention to cause grievous bodily harm? A drunken intent is still intent (R v Kingston)
Loss of control - did D lose self control? Did D act due to the fear or anger qualifying trigger? D’s drug or alcohol addiction can be taken into account when assessing the magnitude of the qualifying anger trigger if D was taunted about the addiction. Normal person test - an intoxicated person is not precluded from using the defence. If D is addicted to drugs or alcohol this will be a characteristic given to the normal person but the normal person will still have normal levels of tolerance and self-restraint (Asmelash)
Interaction between intoxication and diminished responsibility
- Voluntary intoxication cannot be relied upon on its own to find diminished responsibility (Dowds)
- If the defendant has an abnormality of mental functioning (AMF), and is voluntary intoxicated, apply Dietschmann
- D must have an AMF.
- AMF must arise from a recognised medical condition.
- AMF must have substantially impaired the defendant’s ability to do one of the things in s 2(1A) Homicide Act 1957
- AMF must provide an explanation for D’s conduct, even if it is not the only cause (alcohol can be another reason)
- If the defendant’s AMF is alcohol dependency syndrome (ADS):
- D must have an AMF at the time of killing due to ADS.
- This must have impaired defendant’s ability, as above.
- AMF must provide explanation for conduct, as above.
Interaction between intoxication and consent
R v Richardson and Irwin - Defendants lifted and dropped the victim over a balcony. An appeal was allowed because the jury should have been directed to consider whether the defendant believed the victim had consented, even if the defendants wrongly believed the victim had consented due to intoxication.
Interaction between intoxication and statutory defences
Where there is a statutory defence that allows for an honest belief, the defendant will be able to use this defence even if their belief is due to their voluntary intoxication.
Jaggard v Dickinson - Dickinson broke a window in the drunken belief that the house was that of a friend with whom she was staying. The test was subjective, so Dickinson was entitled to the defence under s 5(2) CDA 1971, even where the belief resulted from the defendant’s intoxication.
Consent as a general defence
For offences against the person, the consent of the victim may also preclude a crime. It is not clear whether consent operates as a defence to the crime, or whether the absence of consent is an element of the offence. The Law Lords were divided on this in R v Brown.
Two elements to consent
Whether:
(1) the victim consented; and
(2) the defendant believed the victim consented.
It is for the prosecution to prove both of these elements.
If the defendant wrongly believed the victim consented, the defence could still be available (R v Richardson and Irwin)
When is consent a defence to an offence against the person?
The general rule is that consent is only available as a defence to assault and battery.
Consent - example cases
AG’s Reference (No 6 of 2010) - Two boys decided to settle an argument by a fight. It was held that one was guilty under OAPA 1861 s 47 of assault occasioning actual bodily harm. Judge said ‘most fights will be unlawful regardless of consent.’
R v Brown - confirmed that generally consent is only available as a defence to assault and battery. A group of sadomasochists caused injuries to each other for sexual pleasure. The defendants were charged with offences of assault occasioning ABH s 47 and GBH s 20. Consent failed, because it could not be a defence to anything greater than battery unless it fell into one of the accepted ‘good reasons’/exceptions.
R v Meachen - extended the use of consent to be available when ABH or worse is caused, provided the defendant (a) intended to only commit a battery with the consent of the victim; and (b) did not see the risk of inflicting ABH.