R v O'Grady

A defendant cannot rely on a mistaken belief in the need to use force that was caused by voluntary intoxication.

Citation
[1987] QB 995
Court
Court of Appeal (Criminal Division)
Year
1987
Subject
Criminal Law
Topic
Defences: self defence, duress and necessity

Facts

Mr O'Grady and his friend had been drinking heavily and fell asleep at Mr O'Grady's flat. He said that he woke up to find his friend hitting him, and that he hit back in self defence. His friend died from head injuries. Mr O'Grady was acquitted of murder but convicted of manslaughter. He argued that he was entitled to be judged on the facts as he mistakenly believed them to be, even though his mistake was caused by drink.

Legal principle

The Court of Appeal upheld the conviction. Lord Lane CJ said that a defendant is not entitled to rely, so far as self defence is concerned, upon a mistake of fact which has been induced by voluntary intoxication. Public policy requires that a person who uses violence because of a drunken mistake should not escape liability, whether the offence is one of basic or specific intent. The principle is now in section 76(5) of the Criminal Justice and Immigration Act 2008.

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This summary is for study and revision and is not legal advice. Although our case summaries are checked for accuracy, we do not guarantee that they are free from errors or omissions. Always read the full judgment for the court's reasoning.

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