R v Moloney established the key test for intention in murder cases, distinguishing between direct and oblique intention. The case clarified that foresight of consequences is evidence of intention but not intention itself, requiring the consequence to be a natural consequence that was foreseen as certain or virtually certain.

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.

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.

R v Nedrick established the modern test for proving intention in criminal law, particularly for murder cases. The Court of Appeal clarified that intention can be inferred when death or serious bodily harm was a virtual certainty from the defendant's actions and the defendant appreciated this fact.

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.

R v Lipman established that voluntary intoxication cannot be used as a defence to crimes of basic intent, even where the defendant claims to have been unaware of his actions. The case involved a defendant who killed his girlfriend while under the influence of LSD, believing he was fighting snakes at the centre of the earth.

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 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.

Intention to cause grievous bodily harm sufficient for murder conviction

A soldier shot and killed a person in Northern Ireland, claiming self-defence, but the House of Lords ruled that excessive force in self-defence cannot reduce murder to manslaughter. The case established that the defence of self-defence is 'all or nothing' - if the force used is unreasonable, the defence fails completely.

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.

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 establishes 'virtual certainty' test for oblique intention in murder

Cunningham establishes subjective test for malice in criminal law

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.

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 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.

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.

House of Lords clarifies intent requirements for assault causing bodily harm

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

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

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

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.

Court establishes objective test for dangerous unlawful act in manslaughter cases

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.

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.

Defendant liable when reasonably foreseeable that vulnerable victim could suffer harm

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

Malice transfers when defendant intends harm to A but causes harm to B

The defendant stabbed his pregnant girlfriend, causing her to give birth prematurely. The child was born alive but died 121 days later from the injuries sustained in utero. The House of Lords held that a foetus is not a 'person in being' for murder purposes, but conviction for manslaughter was possible through the doctrine of transferred malice.

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 sets definitive test for gross negligence manslaughter

Injecting heroin is unlawful dangerous act sufficient for manslaughter conviction

This case established that a duty of care in criminal law can arise from voluntary assumption of responsibility for a vulnerable person. Stone and Dobinson were convicted of manslaughter after Stone's sister died from malnutrition while living in their care, despite their failure to seek adequate medical help.

Medical negligence rarely breaks chain of causation in homicide cases

Leading Court of Appeal case that defined 'abnormality of mental functioning' for the partial defence of diminished responsibility, establishing that it covers conditions that reasonable people would regard as abnormal.

Foresight of consequences is evidence of intention, not intention itself.

Specific intent requires decision to bring about the prohibited consequence as means or end.

Voluntary intoxication no defence to crimes of basic intent

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