A foundational case establishing the test for gross negligence manslaughter, requiring negligence so gross that it amounts to a crime and merits criminal punishment rather than mere civil liability.

R v Pittwood established that a person can be criminally liable for omissions where they have undertaken a duty of care. A railway gatekeeper who failed to close level crossing gates, resulting in a fatal collision, was convicted of manslaughter despite not having actively caused the death.

House of Lords case establishing that defendants can be convicted of unlawful act manslaughter without foreseeing that their act might cause harm, provided the act was intentional, unlawful and dangerous.

R v Church established the objective test for involuntary manslaughter, requiring that the defendant's unlawful act must be dangerous in that all sober and reasonable people would recognise it as subjecting the victim to some harm. This case remains the leading authority on unlawful act manslaughter in England and Wales.

R v Gibbins and Proctor established that a person can be criminally liable for murder by omission where they have a duty to act but fail to do so. The case involved a father and his partner who failed to feed the father's child, resulting in the child's death from starvation.

R v Majewski established that voluntary intoxication cannot be used as a defence to crimes of basic intent, distinguishing between crimes of basic and specific intent. This landmark case clarified when defendants can rely on intoxication as a defence in criminal law.

R v Miller established that criminal liability can arise from omission where a defendant creates a dangerous situation and fails to take reasonable steps to counteract it. This landmark case extended the scope of actus reus beyond positive acts to include failures to act in specific circumstances.

This case clarified the mental element required for assault and battery charges under sections 47 and 20 of the Offences Against the Person Act 1861. The House of Lords established that defendants need only intend or be reckless as to the initial assault or battery, not the resulting harm.

R v Ghosh established the test for dishonesty in criminal law, requiring both objective and subjective elements. The case created a two-stage test that was fundamental to determining dishonesty in fraud and theft cases until the Supreme Court replaced its subjective second limb with a wholly objective test in Ivey v Genting Casinos [2017] UKSC 67.

House of Lords sets definitive test for gross negligence manslaughter

This Supreme Court case established a new test for dishonesty in criminal law, overruling the subjective element of the Ghosh test. The case arose from a professional gambler's civil claim against a casino after being accused of cheating at baccarat through edge-sorting.

No unlawful act manslaughter without mens rea for the underlying unlawful act

This case established the fundamental test for the insanity defence in English criminal law. The defendant shot the Prime Minister's secretary believing he was being persecuted by the government.

A key case establishing the limitations of transferred malice where the type of harm differs from that intended. The defendant threw a stone intending to hit people but broke a window instead.

A Victorian case where a man deceived a woman into having sexual intercourse by pretending it was a medical procedure. The court held that deception as to the nature of the act vitiates consent.

Hidden vulnerabilities don't make unlawful act dangerous if unforeseeable to reasonable person

Two shipwrecked sailors killed and ate their teenage cabin boy to survive at sea, then were charged with murder upon rescue. The court rejected the defence of necessity, establishing that necessity cannot justify taking an innocent life.

Defendant liable when reasonably foreseeable that vulnerable victim could suffer harm

R v Latimer established the doctrine of transferred malice in criminal law, where a defendant's intention to harm one person can be transferred to make them liable for actually harming another person. This case is fundamental to understanding how criminal intent operates when the actual victim differs from the intended victim.

Injecting heroin is unlawful dangerous act sufficient for manslaughter conviction

R v White established that causation in criminal law requires the defendant's act to be a factual cause of the prohibited result. White attempted to poison his mother but she died of a heart attack before the poison could take effect, breaking the chain of causation and resulting in conviction only for attempt.

Voluntary assumption of care creates criminal duty toward vulnerable adults

The House of Lords established the fundamental principles governing intoxication as a defence in criminal law, distinguishing between crimes of specific and basic intent and setting rules for when intoxication can negate mens rea.

Voluntary intoxication no defence to manslaughter despite LSD-induced hallucinations

Woolmington v DPP established the fundamental principle that the prosecution must prove guilt beyond reasonable doubt in criminal cases. The case overturned the previous rule that required defendants to prove their innocence when claiming self-defence in murder cases.

Intention to cause grievous bodily harm sufficient for murder conviction

Steane, a British actor, made propaganda broadcasts for Germany during WWII to protect his family from a concentration camp. The Court of Appeal held that for the offence of doing acts likely to assist the enemy with intent to assist the enemy, the prosecution must prove the accused intended to assist the enemy, not merely that he intended to do the acts.

Involuntary intoxication no defence if criminal intent still formed

Automatism requires totally involuntary conduct; insanity defence available for mental disease causing automatism.

Medical negligence rarely breaks chain of causation in homicide cases

A leading case on transferred malice where the defendant's intention to harm one person resulted in harm to another. The Court of Appeal confirmed that malice can transfer from the intended victim to the actual victim.

Section 20 GBH requires foresight of some harm only, not serious harm specifically.

R v Martin established that the defence of self-defence is not available to defendants who use excessive force against burglars, even when acting under psychiatric conditions. The case clarified that duress of circumstances cannot excuse disproportionate defensive action in one's home.

House of Lords abandons objective recklessness test in landmark criminal law ruling

A person intends the natural and probable consequences of their acts.

Actus reus can be satisfied by omission where legal duty to act exists

House of Lords clarifies test for intention in murder cases

Volenti applies when plaintiff voluntarily assumes obvious and extreme risks despite intoxication.

Foresight of highly probable serious harm can constitute mens rea for murder.

Court of Appeal establishes 'virtual certainty' test for criminal intention