Intoxication – The Legal Viewpoint.

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Intoxication – The Legal Viewpoint.

Intoxication by drink or by drugs - the criminal law makes no distinction - is no defence in itself, but has frequently to be considered either as leading to a lack of mens rea or as the cause of a mistake that may offer a defence. The law is unsympathetic towards those who injure others or their property while under the influence of drink or drugs taken voluntarily, and rightly so considering the very large number of crimes that are alcohol- or drug-related. A number of studies have shown that between half and two-thirds of the perpetrators of homicide, assault and rape had been drinking (and that a large proportion of these were seriously intoxicated) at or just before the time of the offence. Alcohol is associated with up to 70 per cent of homicides and serious assaults, and with 50 per cent of fights or assaults in the home.

Specific intent

Where an offence is one of specific intent, and D did not have that intent (whether because of intoxication or for any other reason), he is entitled to be acquitted. Offences of specific intent include murder, wounding with intent, theft, handling stolen goods, indecent assault where an indecent purpose must be proved, and all attempts. Note that the question is not whether D was capable of forming the necessary intent, but whether he did in fact form it.

DPP v Beard [1920] AC 479, HL 

A man D raped and killed a girl of 13, and was convicted of murder. The Court of Appeal substituted a verdict of manslaughter, but the House of Lords restored the murder conviction; D had not been so drunk as to be incapable of forming the necessary intention. [This decision is now regarded as mistaken.]

R v Lipman [1969] 3 All ER 410, CA 

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D and his girlfriend V each took a quantity of LSD (a hallucinatory drug). During his "trip", D imagined he was being attacked by snakes at the centre of the earth and had to defend himself; in doing so, he actually killed V by cramming eight inches of sheet down her throat. He was acquitted of murder because the jury were not sure that he had the necessary intention, being intoxicated, but convicted of manslaughter.

If the defendant actually forms the necessary intent, the fact that he would not have done so but for the intoxication is irrelevant.

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