intoxication as a defence

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Evaluate the effectiveness of intoxication as a defence.

Defendants can be intoxicated by the consumption of alcohol and/or the use of drugs.  Intoxication can only be used as a defence when the defendant can show that he or she was incapable of forming the mens rea of the offence that he or she is charged with.  If the defendant was still able to form the necessary mens rea even whilst intoxicated, the defence would not apply.

Even when the defendant proves that they did not possess mens rea, they can still be found liable for certain crimes.  A distinction between specific intent and basic intent crimes has been made by courts.  A specific intent crime is where the mens rea is the only intention.  Examples include murder, theft, burglary and robbery.  Voluntary and involuntary intoxication both provide a defence to specific intent crimes.  In basic intent crimes, the mens rea can include recklessness.  Examples include involuntary manslaughter, battery and assault.  Defence to a specific intent crime is not available if the defendant has been reckless whilst voluntarily intoxicated however; involuntary intoxication does provide a defence to basic intent crimes.  

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Voluntary intoxication is available only to specific intent crimes if the defendant is incapable of forming the necessary mens rea.  ‘Dutch courage’, the act of deliberately intoxicating yourself in order to commit a crime is not a defence to any crime, even to crimes that can only be committed with a specific intention.   A case example of this is Attorney General for Northern Ireland v Gallagher (1963) here, the defendant drank a bottle of whisky in order to give himself ‘Dutch courage’, he then proceeded to kill his wife with a knife.  The House of Lords upheld his conviction ...

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