Brennan v. HM Advocate

Factual and Procedural Background

The appeal concerns a conviction for the killing of the Defendant's father on 26th September 1976 at the Defendant's mother's house. The incident arose during a quarrel over a gramophone record and involved the Defendant stabbing his father in the chest. On the day of the killing, the Defendant had consumed between 20 and 25 pints of beer and ingested a microdot of LSD approximately half an hour before the event. The Defendant was aware of the intoxicating effects of these substances and consumed them deliberately to produce such effects, which might impair his control over his actions. The Defendant's defence was based on a special plea of insanity due to intoxication. The trial Judge withdrew this special defence from the jury, leading to the appeal.

Legal Issues Presented

1. Whether a temporary impairment of mental faculties resulting solely from self-induced intoxication (alcohol and/or drugs) can amount to legal insanity for the purposes of a special defence of insanity.
2. Whether the jury should have been allowed to consider a verdict of culpable homicide on the basis that the Defendant was so intoxicated that he lacked the specific intent necessary for murder.

Arguments of the Parties

Appellant's Arguments

• The withdrawal of the special defence of insanity was a misdirection; intoxication-induced insanity should be recognised as a valid defence.
• If a person suffers total alienation of reason due to self-induced intoxication, the law should regard that as insanity, absolving criminal responsibility.
• There was evidence sufficient for a jury to find, on a balance of probabilities, that the special defence of insanity was established.
• Alternatively, the trial Judge should have permitted the jury to consider a verdict of culpable homicide on the basis that intoxication deprived the Defendant of the specific intent required for murder.

Appellee's Arguments

• The law does not recognise self-induced intoxication, whether by alcohol or drugs, as insanity or as a basis for diminished responsibility.
• Self-induced intoxication is no defence to criminal charges, including murder.
• The distinction between crimes of specific and basic intent, as applied in English law, does not apply in Scottish law.
• Previous Scottish case law rejects intoxication as a defence and supports the trial Judge's directions to the jury.
• The cases relied upon by the appellant (Campbell and Kennedy) incorrectly stated the law of Scotland on intoxication and criminal responsibility.

Table of Precedents Cited

Court's Reasoning and Analysis

The Court began by defining the legal meaning of insanity in Scottish law, emphasizing that it requires an absolute alienation of reason due to mental disease or defect, not merely a temporary impairment caused by intoxication. The Court relied heavily on classical authorities, particularly Hume, who distinguished genuine insanity from temporary madness caused by voluntary intoxication. The Court reaffirmed that self-induced intoxication, whether by alcohol or drugs, cannot form the basis of a special defence of insanity or diminished responsibility.

The Court disapproved a prior case where a trial Judge had erred by leaving the question of insanity to the jury without recognizing the legal principle that intoxication cannot establish insanity.

Regarding the alternative submission that intoxication might negate the specific intent required for murder, the Court analyzed the relevant cases, including Campbell and Kennedy, and found their statements of Scottish law to be incorrect. The Court highlighted that Scottish law does not recognise the English distinction between specific and basic intent crimes. Instead, murder in Scotland includes acts done with wicked recklessness, which intoxication does not negate.

The Court emphasized that intoxication is a continuing element of the crime and contributes to the mens rea through recklessness. It rejected the notion that intoxication could reduce murder to culpable homicide by negating intent. The Court found that the trial Judge's directions were in accordance with established Scottish law and that there was no evidence to support total alienation of reason or incapacity to form specific intent.

Holding and Implications

The Court REFUSED THE APPEAL.

The holding confirms that under Scottish law:

• Self-induced intoxication, whether by alcohol or drugs, does not constitute insanity nor can it support a plea of diminished responsibility.
• Intoxication cannot negate the mens rea for murder by depriving the accused of specific intent, as Scottish law does not recognise the English distinction between specific and basic intent crimes.
• The trial Judge's withdrawal of the special defence and directions to the jury were correct and consistent with established legal principles.

The decision directly affects the parties by upholding the conviction and clarifying the limits of intoxication as a defence in Scottish criminal law. No new legal precedent altering the established principles was created.