A-LEVEL LAW · GLOSSARY

227 Key Terms. Plainly Defined.

The complete A-Level Law glossary — every key term covering OCR and AQA Criminal Law. Each definition is concise, exam-ready, and cross-referenced to the case authority a Level-4/A* answer needs.

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A

Abnormality of mental functioning statute

The first limb of diminished responsibility under s.2 Homicide Act 1957 (as amended by Coroners and Justice Act 2009). A state of mind so different from that of an ordinary human being that a reasonable person would call it abnormal.

Acceleration principle

If the defendant's act hastens a death that would have occurred anyway (e.g. due to existing illness), legal causation is still established. Linked to the thin-skull rule.

Actual bodily harm (ABH) statute

Assault or battery occasioning bodily harm under s.47 OAPA 1861. Defined as "any hurt or injury calculated to interfere with the health or comfort" of the victim (R v Miller [1954]), provided it is more than "transient and trifling". Includes recognised psychiatric injury (R v Chan Fook [1994]) but not mere emotions such as fear or distress.

Key authority: R v Miller [1954] (definition); R v Chan Fook [1994] (psychiatric ABH); R v Roberts (1971) (mens rea — only assault/battery required).

Actus reus core

The "guilty act" — the physical element of a crime. Can be a positive act, an omission (where a duty exists), or a state of affairs.

Key authority: Hill v Baxter (voluntariness); R v Miller [1983] (created danger).
Full guide on actus reus →

Aggravated burglary statute

Burglary under s.9 Theft Act 1968 committed while the defendant has with them a firearm, imitation firearm, weapon of offence, or explosive. s.10 Theft Act 1968.

Aiding and abetting statute

Secondary participation in an offence — assisting (aiding), encouraging (abetting), procuring, or counselling the principal offender. Accessories and Abettors Act 1861.

AO1, AO2, AO3 core

OCR Law's three marking categories: AO1 — knowledge and understanding; AO2 — application of legal rules and authorities; AO3 — analysis and evaluation. AO3 is what lifts answers from Level 3 to Level 4 / A*.

See worked AO3 examples →

Apprehension

In assault, the victim's anticipation of imminent unlawful force. The victim need not fear the force, only apprehend it. Apprehension can be caused by words alone (R v Ireland).

Appropriation statute

"Any assumption by a person of the rights of an owner" — the actus reus of theft. s.3 Theft Act 1968. Even an innocent acquisition can become appropriation when the defendant assumes ownership rights.

Key authority: R v Hinks [2000] HL; R v Gomez [1993] HL.

Assault

A common law offence (charged under s.39 Criminal Justice Act 1988). Causing the victim to apprehend immediate, unlawful, personal violence. No physical contact required.

Key authority: R v Ireland [1998]; Collins v Wilcock [1984].

Attempt statute

An inchoate offence under s.1 Criminal Attempts Act 1981. The defendant does an act which is "more than merely preparatory" with intent to commit a substantive offence.

Automatism

A defence where the defendant's muscular movements are involuntary — "an act done by the muscles without any control by the mind" (Bratty v AG NI). Sane automatism (external cause) vs insane automatism (internal — within M'Naghten Rules).

Key authority: Bratty v AG of NI [1963]; Hill v Baxter [1958].

AG's Reference (No 3 of 1994)

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AG's Reference (No 6 of 1980)

R v Adomako Free sample

Lord Mackay LC laid down the four-stage test for gross negligence manslaughter: (1) duty of care, (2) breach of duty, (3) gross breach causing criminal liability, (4) breach caused death. The modern leading authority.

Key authority: R v Adomako [1995] 1 AC 171.

R v Asmelash

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B

"But-for" test core

The test for factual causation: but for the defendant's act, would the prohibited consequence have occurred? If yes, no factual causation (R v White).

Key authority: R v White [1910]; R v Pagett (1983).

Basic intent

Crimes which can be committed recklessly or where the mens rea is recklessness. Voluntary intoxication is no defence to basic-intent crimes (DPP v Majewski).

Battery

A common law offence (s.39 Criminal Justice Act 1988). The application of unlawful force to another. Even slightest touching can suffice if unwanted (Collins v Wilcock).

Key authority: Collins v Wilcock [1984]; DPP v Santana-Bermudez [2003].

Beyond reasonable doubt

The criminal standard of proof. The prosecution must prove the defendant's guilt to a degree where a reasonable person would have no real doubt. Higher than civil "balance of probabilities".

Bolam test

(Tort) The standard for medical negligence — a doctor is not negligent if they acted in accordance with a practice accepted as proper by a responsible body of medical opinion.

Key authority: Bolam v Friern Hospital Management Committee [1957].

Building

In burglary (s.9 Theft Act 1968), a structure of considerable size with some degree of permanence. Includes inhabited vehicles and vessels (s.9(4)).

Burden of proof

The obligation on a party to prove the facts in issue. In criminal law, the burden lies on the prosecution (subject to limited reverse burdens, e.g. diminished responsibility).

Burglary statute

s.9 Theft Act 1968. Two forms: s.9(1)(a) — entering as a trespasser with intent to steal, inflict GBH, or do unlawful damage. s.9(1)(b) — having entered as trespasser, stealing or attempting to steal or inflicting/attempting GBH.

Key authority: R v Walkington [1979]; R v Brown [1985] (effective entry).

R v Bailey

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R v Barton & Booth

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R v Bateman Free sample

Lord Hewart CJ: negligence is criminal where it shows "such disregard for the life and safety of others as to amount to a crime". The original gross-negligence threshold, still cited by Adomako.

Key authority: R v Bateman (1925) 19 Cr App R 8.

R v Belfon

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R v Blaue Free sample

Held: the "thin skull" or "eggshell" rule — defendants take their victims as they find them, including their religious beliefs. Jehovah's Witness's refusal of blood transfusion did not break the chain of causation.

Key authority: R v Blaue [1975] 1 WLR 1411.

R v BM

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R v Brown

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R v Burstow

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R v Byrne

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C

Caldwell recklessness overruled

Objective recklessness test from MPC v Caldwell [1982] — defendant liable if a reasonable person would have seen the risk. OVERRULED by R v G [2003] HL. Do not cite as current law.

Key authority: MPC v Caldwell [1982] (overruled).

Caparo three-stage test

(Tort) Test for duty of care in negligence: (1) reasonable foreseeability of harm; (2) sufficient proximity; (3) fair, just and reasonable to impose a duty.

Key authority: Caparo Industries v Dickman [1990].

Causation core

The link between the defendant's conduct and the prohibited harm. Two limbs: factual (but-for) and legal (operating and substantial cause).

Key authority: R v White [1910]; R v Smith [1959]; R v Cheshire [1991].
Full guide on causation →

Cheshire test

For legal causation: the original wound must be the "operating and substantial cause" of death. Medical treatment will not break the chain unless it is "so independent and so potent that the defendant's contribution becomes insignificant".

Key authority: R v Cheshire [1991].

Church test

For unlawful act manslaughter — the unlawful act must be objectively dangerous. The test: would a sober and reasonable person, observing the act, recognise that it subjects the victim to the risk of some harm?

Key authority: R v Church [1966].

Coincidence of AR and MR core

The actus reus and mens rea must exist at the same time for liability. Softened by the continuing act and single transaction doctrines.

Key authority: Fagan v MPC; Thabo Meli v R; R v Le Brun.

Common assault

Umbrella term covering both assault (apprehension) and battery (force). Charged under s.39 Criminal Justice Act 1988 as a summary offence.

Common law

Law developed by judges through the doctrine of precedent (stare decisis), as opposed to statute. Murder, manslaughter, and assault are common-law offences.

Conditional intent

Intention to commit an offence only if a particular condition is met (e.g. entering a building intending to steal "if anything is worth taking"). Sufficient for inchoate offences and burglary.

Key authority: Attorney-General's References (Nos 1 and 2 of 1979).

Conduct crime

A crime where the actus reus is satisfied by conduct alone — no consequence required (e.g. perjury, possession of a controlled drug, dangerous driving).

Consent (as defence)

A defence to assault, battery, and (limited) ABH/GBH. Cannot consent to deliberate harm above ABH except in recognised exceptions (sport, surgery, tattooing). Sado-masochism not exempt (R v Brown).

Key authority: R v Brown [1994] HL; R v Wilson [1996]; R v BM [2018].

Conspiracy statute

An inchoate offence under s.1 Criminal Law Act 1977. Agreement between two or more people to commit an offence. Includes statutory conspiracy and common-law conspiracy to defraud.

Constructive manslaughter

Another name for unlawful act manslaughter. The mens rea is "constructed" from the mens rea of the unlawful act — the defendant need not foresee death or any harm.

Continuing act doctrine

Where the actus reus continues over a period of time, mens rea formed during that period satisfies coincidence.

Key authority: Fagan v MPC [1969] (car on policeman's foot).

Coroners and Justice Act 2009 statute

Reformed the partial defences to murder. ss.54-55 replaced provocation with loss of control; s.52 amended diminished responsibility (Homicide Act 1957 s.2).

Corporate manslaughter statute

Corporate Manslaughter and Corporate Homicide Act 2007. An organisation is guilty if the way in which its activities are managed or organised causes a person's death and amounts to a gross breach of a duty of care.

Criminal Damage Act 1971 statute

Creates offences of destroying or damaging property belonging to another. Simple criminal damage (s.1(1)), aggravated criminal damage (s.1(2) — with intent or recklessness as to endangering life), arson (s.1(3)).

Crown Court

The court that hears indictable and either-way offences with a judge and jury. Located in major cities. The Court of Appeal (Criminal Division) hears appeals from it.

Cunningham recklessness core

Subjective recklessness — the defendant foresaw the risk and took it anyway. The dominant test post-R v G [2003].

Key authority: R v Cunningham [1957] CCA (gas meter case).

Chan Fook (R v)

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R v Clinton, Parker & Evans

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R v Clouden

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R v Collins (1973)

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Collins v Wilcock

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R v Constanza

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D

Damage (criminal)

Under the Criminal Damage Act 1971, any temporary or permanent physical harm or impairment to property — including erasing data, scratching paintwork, or trampling a lawn.

Damages

(Tort/Contract) Monetary compensation awarded to a claimant. Compensatory, nominal, exemplary, or aggravated.

Dangerous act

For unlawful act manslaughter — an act which a sober and reasonable person would recognise as creating a risk of some harm to the victim. Objective test from R v Church.

De minimis rule

The defendant's contribution to the harm must be more than minimal/trifling. The act must be a "more than minimal" cause but need not be the sole or main cause.

Key authority: R v Hughes [2013].

Diminished responsibility statute

Partial defence to murder under s.2 Homicide Act 1957 (as amended). Requires: (1) abnormality of mental functioning; (2) arising from a recognised medical condition; (3) substantially impairing the defendant's ability to understand, form rational judgment, or exercise self-control; (4) providing an explanation for the killing.

Direct intention

The defendant's main aim, purpose, or desire to bring about the prohibited consequence.

Key authority: R v Mohan [1976] CA (James LJ definition).

Dishonesty

The Ivey test: (1) what was the defendant's actual state of knowledge or belief as to the facts? (2) was their conduct dishonest by the standards of ordinary decent people? Replaces the Ghosh test.

Key authority: Ivey v Genting Casinos [2017] UKSC; R v Barton and Booth [2020] CA (confirmed for criminal law).

Donoghue v Stevenson principle

(Tort) Lord Atkin's "neighbour principle" — you must take reasonable care to avoid acts or omissions which you can reasonably foresee would be likely to injure your neighbour.

Key authority: Donoghue v Stevenson [1932].

Duress

A defence to most offences (not murder, attempted murder, treason). Duress by threats (immediate threat of death/serious injury) or duress of circumstances. The Graham test applies.

Key authority: R v Graham [1982]; R v Hasan [2005] HL.

Duty of care

(Tort) The legal obligation to take reasonable care to avoid harm to others. Established by the Caparo three-stage test in novel situations.

Duty to act

In criminal law, an omission can satisfy actus reus only where the defendant owed a duty to act. Six recognised categories: statute, contract, public office, voluntary assumption, special relationship, and creation of danger.

Key authority: R v Pittwood (contract); R v Dytham (office); R v Stone & Dobinson (voluntary); R v Miller (created danger).

Davidge v Bunnett

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R v Dawes, Hatter & Bowyer

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R v Dawson

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R v Dietschmann

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DPP v K

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DPP v Santana-Bermudez

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DPP v Smith [1961]

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E

Either-way offence

An offence triable in either the Magistrates' Court or Crown Court (e.g. ABH s.47, theft, burglary). The defendant elects Crown Court trial, or the magistrates decline jurisdiction.

Encouraging or assisting crime statute

Inchoate offences under ss.44-46 Serious Crime Act 2007. Replaced the common-law offence of incitement.

Entry (burglary)

For s.9 Theft Act 1968 — the defendant must enter as a trespasser. "Effective entry" is sufficient; entry of any part of the body can suffice.

Key authority: R v Brown [1985] (top half of body in window); R v Ryan [1996] (stuck partway).

Escape cases

Where the victim flees from the defendant and is injured. The chain of causation is broken only if the victim's response is "daft" — disproportionate to the threat.

Key authority: R v Roberts (1971); R v Williams & Davis [1992]; R v Marjoram [2000].

Express malice

For murder — the intention to kill the victim. One form of malice aforethought.

R v Evans Free sample

Held: where the defendant creates or contributes to a life-threatening state of affairs (here, supplying heroin to a half-sister who then overdosed), the defendant has a duty to take reasonable steps to avert the danger. Breach can found GNM.

Key authority: R v Evans [2009] EWCA Crim 650.

F

Factual causation

First stage of causation. The "but-for" test — but for the defendant's act, would the harm have occurred?

Key authority: R v White [1910].

Foresight of consequences

Evidence (not equivalent) of intention. If consequence was a virtual certainty and the defendant appreciated this, the jury may find intention.

Key authority: R v Nedrick [1986]; R v Woollin [1998] HL; R v Matthews & Alleyne [2003].

Fraud Act 2006 statute

Created three new fraud offences: fraud by false representation (s.2), failing to disclose (s.3), and abuse of position (s.4). Replaced the deception offences in the Theft Acts.

Free, deliberate, informed act

In causation, a victim's or third party's "free, deliberate, and informed" act will break the chain — e.g. a drug user freely self-injecting.

Key authority: R v Kennedy (No 2) [2007] HL.

Fagan v Metropolitan Police Commissioner

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G

Gammon principle

The four-factor test for deciding whether to impute strict liability. (1) Presumption of mens rea; (2) stronger where the offence is "truly criminal"; (3) displaceable only by necessary implication; (4) only where it advances enforcement of the statute.

Key authority: Gammon v AG of Hong Kong [1985] PC.

Grievous bodily harm (GBH) statute

"Really serious harm" (DPP v Smith [1961]). The actus reus of s.18 and s.20 OAPA 1861. Includes serious psychiatric harm (R v Burstow) and transmitting serious sexually-transmitted disease (R v Dica).

Key authority: DPP v Smith [1961]; R v Burstow [1998]; R v Dica [2004].

Gross negligence manslaughter

Involuntary manslaughter by gross negligence. Four-stage test (Adomako): (1) duty of care; (2) breach; (3) breach caused death; (4) breach was so gross as to be criminal.

Key authority: R v Adomako [1995] HL.

R v Golds

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R v Gomez

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R v Goodfellow

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R v Groark

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H

Hansard rule

Permits courts to use parliamentary debates as an aid to statutory interpretation in limited circumstances.

Key authority: Pepper v Hart [1992] HL.

Harassment statute

Course of conduct amounting to harassment of another. Civil and criminal liability under the Protection from Harassment Act 1997. Aggravated form (s.4) where it causes fear of violence.

Homicide

The unlawful killing of one human being by another. Includes murder, manslaughter (voluntary and involuntary), and infanticide.

Homicide Act 1957 statute

Codifies the partial defences to murder — diminished responsibility (s.2, as amended by Coroners and Justice Act 2009), suicide pact (s.4). Repealed common-law provocation (replaced by Loss of Control in Coroners and Justice Act 2009).

R v Hale

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R v Hardie

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Haystead v DPP

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R v Heard

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R v Hinks

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I

Implied malice

For murder — the intention to cause grievous bodily harm. Sufficient mens rea for murder if death results.

Key authority: R v Vickers [1957] CCA; affirmed R v Cunningham [1981] HL.

Inchoate offences

Offences which precede the full commission of a substantive offence: attempt (Criminal Attempts Act 1981 s.1), conspiracy (Criminal Law Act 1977 s.1), encouraging/assisting (Serious Crime Act 2007 ss.44-46).

Indictable offence

The most serious category of offence (e.g. murder, rape, robbery, GBH s.18). Tried only in the Crown Court before a judge and jury.

Inflict (s.20 OAPA)

Historically narrower than "cause" (s.18) but now treated as substantially the same — no need for assault or battery (R v Burstow).

Key authority: R v Burstow [1998] HL.

Innocent agent

A person used by the principal offender to commit an offence without themselves having the mens rea (e.g. a child under 10, or someone deceived into delivering a parcel containing drugs).

Intention core

The highest level of mens rea. Two forms: direct (aim/purpose) and oblique (foresight of virtual certainty as evidence of intention).

Key authority: R v Mohan; R v Woollin; R v Matthews & Alleyne.
Full guide on mens rea →

Intention permanently to deprive statute

The final element of theft under s.6 Theft Act 1968. Treating the property as one's own to dispose of regardless of the owner's rights. Borrowing can amount to it if the borrowing is "equivalent to an outright taking".

Intoxication

Voluntary intoxication is no defence to crimes of basic intent (DPP v Majewski) but may negate the mens rea of specific-intent crimes. Involuntary intoxication is a defence if it negated mens rea.

Key authority: DPP v Majewski [1977] HL.

Involuntary manslaughter

Manslaughter without the mens rea for murder. Two principal forms: unlawful act (constructive) manslaughter and gross negligence manslaughter. "Reckless manslaughter" is no longer treated as a distinct category — it is largely absorbed into GNM following R v Adomako [1995].

R v Inglis

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R v Ireland

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Ivey v Genting Casinos

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J

Joint enterprise

Where two or more people commit an offence together. Following R v Jogee [2016] UKSC, secondary parties are liable only where they intentionally assist or encourage, with knowledge of the principal's conduct.

Key authority: R v Jogee [2016] UKSC (corrected 30 years of wrong law); R v Gnango [2011] UKSC.

JCC v Eisenhower

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R v Jewell

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R v Jordan Free sample

Held: "palpably wrong" medical treatment that is the substantial cause of death can break the chain of causation. Distinguished where the original wound is still operating substantially (cf. R v Smith).

Key authority: R v Jordan (1956) 40 Cr App R 152.

K

Kennedy principle

In drugs cases, the victim's "free, deliberate, and informed act" of self-injection breaks the chain of causation — the supplier cannot be guilty of UAM where the victim freely injected themselves.

Key authority: R v Kennedy (No 2) [2007] HL.

L

Latimer rule

Mens rea aimed at one victim transfers to the actual victim of the same type of offence. Foundation of transferred malice.

Key authority: R v Latimer (1886).
Full guide on transferred malice →

Legal causation

Second stage of causation. The defendant's act must be the "operating and substantial cause" of the harm. Considers intervening acts, thin-skull rule, and policy.

Key authority: R v Smith [1959]; R v Cheshire [1991]; R v Jordan [1956].

Literal rule

Statutory interpretation: words are given their ordinary, natural, dictionary meaning, even if this leads to an absurd result.

Key authority: Whiteley v Chappell (1868); LNER v Berriman [1946].

Loss of control statute

Partial defence to murder under ss.54-55 Coroners and Justice Act 2009. Three elements: (1) the defendant lost self-control; (2) qualifying trigger (fear of serious violence and/or things said/done of extremely grave character causing justifiable sense of being seriously wronged); (3) a normal person in the defendant's circumstances might have reacted similarly.

Key authority: R v Clinton, Parker & Evans [2012] (sexual infidelity).

R v Lloyd

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R v Lockley

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M

M'Naghten Rules core

The rules on insanity (1843). The defendant must prove (on balance of probabilities) that at the time of the act, due to a "defect of reason from disease of the mind", they did not know (a) the nature and quality of the act, or (b) that it was wrong.

Key authority: M'Naghten's Case (1843); R v Sullivan [1984].

Magistrates' Court

The lowest criminal court, hearing summary offences and either-way offences (where appropriate). Limited sentencing powers: 6 months for a single summary offence; 12 months for a single either-way offence (reinstated 18 November 2024 under regulations made under the Sentencing Act 2020). If the court considers its sentencing powers insufficient, it commits the case to the Crown Court for sentence.

Malice aforethought core

The mens rea of murder. Either express malice (intention to kill) or implied malice (intention to cause GBH).

Key authority: R v Vickers; R v Cunningham [1981] HL.

Manslaughter

Unlawful killing without the mens rea for murder, or murder reduced by a partial defence. Two main categories: voluntary (with malice aforethought + partial defence) and involuntary (without malice aforethought).

Mens rea core

The "guilty mind" — the mental element of a crime. Levels include intention (direct/oblique), recklessness (Cunningham), knowledge, belief, and negligence.

Key authority: R v Mohan; R v Cunningham [1957]; R v G [2003].
Full guide on mens rea →

Mischief rule

Statutory interpretation: courts look at the "mischief" the statute was designed to remedy and interpret the words to suppress that mischief.

Key authority: Heydon's Case (1584); Smith v Hughes [1960].

Mistake

A defence where a mistaken belief negates the mens rea. Must be honest; need not be reasonable (DPP v Morgan). For self-defence, an honest mistaken belief in the need for force is judged on the facts as the defendant believed them.

Key authority: DPP v Morgan [1976]; R v Williams (Gladstone) [1987].

More than minimal cause

For factual causation, the defendant's conduct must be more than a minimal contribution to the harm — but it need not be the sole or principal cause.

Key authority: R v Hughes [2013] UKSC.

Motive

The reason a defendant acts. Motive is irrelevant to the existence of mens rea (a good motive does not negate intention).

Key authority: R v Inglis [2011] CA (mercy killing).

Murder core

A common-law offence. The unlawful killing of a reasonable person in being under the Queen's Peace, with malice aforethought, the death occurring within any time after the act.

Key authority: R v Vickers; DPP v Smith; AG's Reference No 3 of 1994.

R v Matthews & Alleyne

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R v Misra & Srivastava Free sample

Held: the Adomako test for gross negligence manslaughter is sufficiently precise to satisfy Article 7 ECHR (no punishment without law). Circular phrasing is not the same as vagueness.

Key authority: R v Misra & Srivastava [2004] EWCA Crim 2375.

R v Mitchell

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R v Mohan Free sample

Held: direct intent means "a decision to bring about" the prohibited consequence "no matter whether the accused desired that consequence or not". The leading definition of direct intent.

Key authority: R v Mohan [1976] QB 1.

R v Morris

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R v Mowatt

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N

Necessity

A rare common-law defence — choosing the lesser of two evils where evil was inevitable. Recognised in Re A (Conjoined Twins) [2001] but otherwise narrow.

Key authority: Re A (Conjoined Twins) [2001] CA.

Nedrick direction

The original test for oblique intention (1986): the jury can infer intention if death/serious harm was a virtual certainty and the defendant appreciated this. Refined in Woollin — "infer" became "find".

Key authority: R v Nedrick [1986] CA.

Negligence

A failure to exercise reasonable care. Standalone mens rea in few criminal offences (e.g. dangerous driving) but central to gross negligence manslaughter and tort.

Novus actus interveniens core

A "new intervening act" that breaks the chain of causation. Can be (i) the act of a third party; (ii) the act of the victim; (iii) a natural event. Must be free, deliberate, and informed (third party) or unforeseeable (victim).

Key authority: R v Pagett; R v Kennedy (No 2); R v Roberts.

R v Newbury & Jones

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O

OAPA 1861 statute

The Offences Against the Person Act 1861. Codifies the main non-fatal offences: s.18 (wounding/GBH with intent), s.20 (malicious wounding/GBH), s.47 (ABH), s.23 (administering noxious substance).

Obiter dicta

"Things said by the way" — comments in a judgment not strictly necessary for the decision. Persuasive but not binding precedent.

Oblique intention

Where the consequence was a virtual certainty of the defendant's act, and the defendant appreciated this. The jury may find intention (it is evidence of, not equivalent to, intention).

Key authority: R v Woollin [1998] HL; R v Matthews & Alleyne [2003] CA.

Omission

A failure to act. Generally not actus reus unless the defendant owed a duty to act. See Duty to act for the six categories.

Key authority: R v Pittwood; R v Stone & Dobinson; Airedale NHS Trust v Bland.

Operating and substantial cause

The standard for legal causation. The original wound must still be operating and a substantial cause at the time of harm — even if not the sole cause.

Key authority: R v Smith [1959] (paratrooper, dropped three times); R v Cheshire [1991].

Original precedent

A new point of law decided by a court for the first time. Often relies on analogy with existing principles.

Key authority: Donoghue v Stevenson [1932]; Hunter v Canary Wharf [1997].

P

Pembliton rule

Transferred malice does not transfer between offences of different types — mens rea for assault cannot transfer to criminal damage. (Note: commonly misspelt "Pembilton" in mark schemes — the correct spelling is Pembliton.)

Key authority: R v Pembliton (1874).

Per incuriam

"Through lack of care" — a precedent decided in ignorance of a relevant statute or binding authority. Such decisions are not binding.

Persuasive precedent

A precedent which need not be followed but which the court may consider. Includes obiter dicta, decisions of lower courts, Privy Council decisions, dissenting judgments, and foreign-law decisions.

Police and Criminal Evidence Act 1984 statute

"PACE". Governs police powers and procedures for stop-and-search, arrest, detention, questioning, and treatment of suspects. Codes of Practice A–H supplement the Act.

Precedent (stare decisis)

"To stand by things decided". The doctrine that courts must follow earlier decisions of higher courts. Underpins certainty and consistency in English common law.

Presumption of mens rea

There is a presumption that mens rea is required for every offence. Displaceable only by clear statutory words or necessary implication (Gammon).

Key authority: Sweet v Parsley [1970] HL; B v DPP [2000] HL.

Principal offender

The person who actually commits the actus reus of an offence (the "perpetrator"). Distinguished from secondary parties (accessories).

Property (theft) statute

s.4 Theft Act 1968. Includes money and all other property, real or personal, including things in action and other intangible property (s.4(1)). Land cannot generally be stolen except in narrow circumstances (s.4(2)). Picking wild mushrooms, flowers, fruit, or foliage from wild plants for personal use is not theft (s.4(3)) — but it is theft if done for sale, reward, or other commercial purpose. Wild animals are property capable of being stolen only if tamed, kept in captivity, or reduced into possession (s.4(4)).

Proportionate force

In self-defence, force used must be reasonable and proportionate to the threat. The householder defence (s.76 Criminal Justice and Immigration Act 2008) allows disproportionate but not "grossly disproportionate" force.

Purposive approach

Statutory interpretation: courts give effect to the purpose of the legislation as evidenced by the words used and external aids. The dominant modern approach.

Key authority: R v Registrar General, ex p Smith [1991]; Pepper v Hart [1992].

R v Pagett Free sample

Held: a defendant's use of an innocent third party as a human shield does not break the chain of causation when police return fire. The reasonable, lawful response of police is not a novus actus interveniens.

Key authority: R v Pagett (1983) 76 Cr App R 279.

R v Pittwood Free sample

Held: a contractual duty to act (here, a railway-gate keeper failing to close the gate) can found liability for manslaughter where breach causes death. Omission liability where contract creates a duty of care.

Key authority: R v Pittwood (1902) 19 TLR 37.

Q

Qualifying trigger statute

For loss of control. Either (a) fear of serious violence from the victim, or (b) things said or done of an extremely grave character giving the defendant a justifiable sense of being seriously wronged. ss.55(3)–(4) Coroners and Justice Act 2009.

Queen's Peace

For murder — the victim must be killed "under the Queen's Peace". Excludes killing enemy combatants in war, but covers virtually everyone else (including foreign nationals).

R

Ratio decidendi

"The reason for the decision". The legal principle on which the decision is based — binding precedent on lower courts.

Reasonable force

s.76 Criminal Justice and Immigration Act 2008 (codifying common law). Force must be proportionate; judged on the facts as the defendant believed them to be, even if the defendant was mistaken.

Key authority: R v Williams (Gladstone) [1987]; R v Martin (Tony) [2002].

Reasonable person test

The objective standard used in many areas of law (causation, dangerous-act test, normal-person test in LOC). A hypothetical person of ordinary maturity and self-restraint.

Recklessness core

A lower mens rea than intention. The Cunningham (subjective) test applies — the defendant must have foreseen the risk and taken it. Caldwell's objective test was overruled.

Key authority: R v Cunningham [1957]; R v G [2003] HL.

Recognised medical condition

The second element of diminished responsibility post-2009 Act — the abnormality must arise from a medically recognised condition (e.g. depression, schizophrenia, PTSD, BWS, ADS).

Result crime

A crime where actus reus requires a specific consequence (e.g. murder requires death, GBH requires really serious harm). Distinguished from conduct crimes.

Robbery statute

s.8 Theft Act 1968. Theft + use or threat of force on any person, immediately before or at the time of the theft, in order to steal.

Rule of evidence

A principle relating to what may be considered in establishing a fact (e.g. foresight is evidence of intention, not equivalent to it).

Key authority: R v Matthews & Alleyne [2003] CA.
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R v Roberts (escape cases)

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R v Robinson

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R v Rose [2017] Free sample

Held: for the third stage of Adomako, the jury must find that a "serious and obvious risk of death" was reasonably foreseeable at the time of the breach — not assessed in hindsight. Optometrist conviction quashed.

Key authority: R v Rose [2017] EWCA Crim 1168.

R v Ryan

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S

Section 18 OAPA 1861 statute

Wounding or causing GBH with intent. Specific-intent offence. Maximum sentence: life imprisonment.

Section 20 OAPA 1861 statute

Maliciously wounding or inflicting GBH. Mens rea: intention or subjective recklessness as to some harm (not the GBH itself).

Key authority: R v Mowatt [1968]; R v Savage; DPP v Parmenter [1991].

Section 47 OAPA 1861 statute

Assault occasioning actual bodily harm. Mens rea is the mens rea of the underlying assault/battery only — no need for foresight of the ABH itself.

Key authority: R v Savage; DPP v Parmenter [1991] HL.

Self-defence

A complete defence to crimes against the person and property. Codified by s.76 Criminal Justice and Immigration Act 2008. Honest belief in need for force; force must be reasonable.

Key authority: R v Williams (Gladstone) [1987]; R v Martin (Tony) [2002].

Sexual infidelity (LOC)

Generally excluded as a qualifying trigger under s.55(6)(c) Coroners and Justice Act 2009, but can be considered as part of the wider context in which other triggers operate.

Key authority: R v Clinton, Parker & Evans [2012] CA.

Single transaction doctrine

Treats a series of acts as one continuing transaction, allowing mens rea formed earlier to satisfy coincidence with a later actus reus.

Key authority: Thabo Meli v R [1954]; R v Le Brun [1991].

Specific intent

Crimes where intention (not recklessness) is the mens rea — e.g. murder, s.18 GBH, theft, robbery, burglary. Voluntary intoxication can be a defence if it negates intention.

Standard of proof

Criminal: beyond reasonable doubt (prosecution). Civil: balance of probabilities. Diminished responsibility imposes a reverse burden on the defendant on balance of probabilities.

Stare decisis

See Precedent. The principle that courts follow earlier decisions of higher courts (and, with limited exceptions, their own previous decisions).

State of affairs offence

A crime where the actus reus is "being" in a particular state — e.g. being found drunk in a highway (Winzar v CC Kent), being an illegal alien in the UK (R v Larsonneur). Often strict liability.

Key authority: R v Larsonneur (1933); Winzar v CC Kent [1983].

Strict liability core

Offences requiring no mens rea for at least one element of the actus reus. Common in regulatory offences (food safety, road traffic). Applied by Gammon principles.

Key authority: Gammon v AG of Hong Kong [1985]; Sweet v Parsley [1970]; B v DPP [2000].

Subjective recklessness

The Cunningham test — the defendant foresaw the risk and went on to take it. The standard recklessness test in English criminal law since R v G [2003].

Key authority: R v Cunningham [1957]; R v G [2003] HL.

Substantial impairment statute

Third element of diminished responsibility (Coroners and Justice Act 2009). The abnormality must substantially impair the defendant's ability to (a) understand the nature of conduct; (b) form rational judgment; or (c) exercise self-control. More than trivial; need not be total.

Key authority: R v Golds [2016] UKSC.

Summary offence

The least serious category of offence (e.g. common assault, minor driving offences). Tried only in the Magistrates' Court.

Supreme Court

The highest court in the UK (since 2009; previously the Appellate Committee of the House of Lords). Binds all lower courts; can depart from its own previous decisions (1966 Practice Statement).

R v Savage; DPP v Parmenter

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R v Singh Free sample

Held: the standard of care for gross negligence manslaughter is that of the reasonably competent person in the defendant's role. Landlord judged by the standard of a reasonable landlord; tenant died from carbon monoxide.

Key authority: R v Singh [1999] EWCA Crim 460.

R v Smith [1959] Free sample

Held: the original wound need not be the sole cause of death — it must be the "operating and substantial" cause. Medical mistreatment did not break the chain where the stab wound was still operating significantly.

Key authority: R v Smith [1959] 2 QB 35.

R v Stone & Dobinson Free sample

Held: a voluntary assumption of care for a helpless adult relative creates a duty to act. Failure to summon medical help when the adult became ill found liability for gross negligence manslaughter.

Key authority: R v Stone & Dobinson [1977] QB 354.

T

Take your victim as you find them

See Thin-skull rule.

Theft statute

s.1 Theft Act 1968. Five elements: (1) appropriation (s.3) of (2) property (s.4) (3) belonging to another (s.5) with (4) dishonesty (Ivey) and (5) intention permanently to deprive (s.6).

Key authority: Ivey v Genting Casinos [2017] UKSC; R v Hinks [2000] HL.

Theft Act 1968 statute

The principal statute on dishonesty offences: theft (s.1), robbery (s.8), burglary (s.9), aggravated burglary (s.10), making off without payment (s.3 Theft Act 1978).

Thin-skull rule core

The defendant must "take their victim as they find them" — physical, mental, or religious peculiarities of the victim cannot break the chain.

Key authority: R v Blaue [1975] (Jehovah's Witness refusing transfusion); R v Hayward (1908) (thymus gland).

Transferred malice core

Doctrine allowing mens rea aimed at one victim to transfer to the actual victim within the same type of offence. Does not transfer between offence types (R v Pembliton) and cannot transfer twice.

Key authority: R v Latimer (1886); R v Pembliton (1874); AG's Reference No 3 of 1994.
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Trespass

Entry to land or property without permission or other lawful authority. Required actus reus element of burglary (s.9 Theft Act 1968).

R v Tandy

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Thabo Meli v R

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Tuberville v Savage

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R v Turner (No 2)

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U

Ulterior intent

A specific intent which goes beyond the actus reus — e.g. in burglary s.9(1)(a), the intent to steal once inside. The actus reus is entry as trespasser; the intent to steal is ulterior to it.

Unlawful act manslaughter core

Death caused by an unlawful and objectively dangerous act. Four elements: (1) unlawful act; (2) dangerous (Church); (3) caused death; (4) mens rea for the unlawful act only.

Key authority: R v Church; R v Mitchell; R v Adomako (overlap with GNM).

V

Vicarious liability

(Tort) An employer's strict liability for torts committed by an employee in the course of employment. Generally not a feature of criminal law (which requires personal fault), but applies in some regulatory offences.

Virtual certainty

In oblique intention, the consequence must have been a virtual certainty of the defendant's act (Woollin standard) and the defendant must have appreciated this. Lower than "moral certainty" but higher than "highly probable".

Key authority: R v Woollin [1998] HL (3-month-old baby, find not infer).

Voluntary act

The actus reus must be voluntary — an act of the will. Involuntary acts (automatism, reflex) negate actus reus.

Key authority: Hill v Baxter [1958] (swarm of bees example).

Voluntary manslaughter

Murder reduced to manslaughter by a partial defence — loss of control (Coroners and Justice Act 2009) or diminished responsibility (HA 1957 s.2, as amended). The mens rea of murder is satisfied; the partial defence reduces liability.

R v Velumyl

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R v Vickers

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W

Wilful blindness

Deliberately closing one's eyes to obvious risk — often equated with subjective recklessness or, in some contexts, with knowledge.

Wound

A break in the continuity of both layers of skin (epidermis and dermis). Internal bleeding alone is not a wound (JCC v Eisenhower).

Key authority: JCC v Eisenhower [1983] (broken capillaries insufficient).

Wounding with intent statute

s.18 OAPA 1861. Wounding or causing GBH with intent to do GBH or resist/prevent arrest. Specific-intent offence. Maximum: life imprisonment.

R v Wacker Free sample

Held: a duty of care for gross negligence manslaughter can be owed even where the victim was a willing participant in the defendant's criminal venture. Lorry driver liable when 58 illegal immigrants suffocated.

Key authority: R v Wacker [2003] EWCA Crim 1944.

R v Walkington

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R v Watson

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R v White (1910) Free sample

Held: factual causation requires the "but for" test — but for the defendant's act, the result would not have occurred. The defendant poisoned mother's drink; mother died of heart attack before drinking it. No factual causation; only attempt liable.

Key authority: R v White [1910] 2 KB 124.

R v Wilcocks

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R v Wood

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R v Woollin Free sample

Held: in murder, the jury may find intention (oblique intent) where death or serious bodily harm was a virtual certainty of the defendant's act and the defendant appreciated this. The modern oblique-intent direction.

Key authority: R v Woollin [1999] 1 AC 82.

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