What Is a Caution? The Warning Before Questioning and the Warning Instead of Charge

Before questioning a suspect about an offence, police are required to inform them of specified rights, which in most common law jurisdictions include the right to remain silent, a warning that anything said may be used in evidence, and information about access to legal advice. The purpose is to ensure that any statement is given knowingly rather than in ignorance of the consequences, which bears on whether it can be used, and evidence obtained after a failure to caution may be excluded. The precise wording is prescribed and differs between jurisdictions, and the English version includes a clause warning that failing to mention something later relied on may harm a defence, which qualifies the right to silence and was controversial when introduced. That clause means silence can carry a cost, which is not the case everywhere.

A caution as a disposal is a formal warning administered instead of prosecution and it has specific requirements:

• •Sufficient evidence to charge, since a caution is not available where the case is weak
• •An admission of the offence, which is why accepting one is a decision with legal weight
• •Informed consent, since the person must agree and must understand the consequences
• •Suitability for the offence, with more serious matters excluded or requiring senior authorisation
• •A record kept, which is disclosed in certain employment checks and can be cited in later proceedings
• •No conviction, since the matter does not go to court and no finding of guilt is made by any tribunal

The consequences are routinely underestimated by people offered a caution, which is why legal advice matters at that point. Accepting requires admitting the offence, and that admission is recorded. The record appears on enhanced criminal record checks used for a range of employment, particularly work with children and vulnerable adults, and for several professional registrations, which can affect a career years afterwards. It may be disclosed to other countries and affect travel and visa applications. It can be referred to in later proceedings and can affect the outcome of a subsequent matter. Against that, it avoids a court appearance, a conviction and a sentence, and for a person who did commit a minor offence it is generally a better outcome than prosecution. The decision turns on whether the admission is accurate, which is exactly what a person under pressure is least placed to assess alone.

The right the warning refers to has a longer history and more qualification than its familiar phrasing suggests. It developed in English law partly in reaction to ecclesiastical courts compelling people to answer under oath, and it rests on the principle that the state must prove its case rather than extract it from the accused. It is not absolute anywhere. English law permits a court to draw adverse inferences where a suspect fails to mention something later relied on, which was introduced in 1994 against substantial opposition and which qualifies the right meaningfully. Other jurisdictions prohibit any inference. Requirements to provide identifying information, to supply breath samples and in some places to disclose encryption keys all create duties that sit alongside it. The practical advice from lawyers everywhere is consistent, which is to say nothing until advised, and the reason is that the qualifications are complicated enough that nobody should navigate them alone.

Such disposals belong to a range of options short of prosecution that criminal justice systems use, and the arguments about them are the same everywhere. Supporters point to the cost and delay of prosecuting minor matters, to the harm a conviction does to a young or first-time offender, and to evidence that diversion produces lower reoffending than prosecution for comparable cases. Critics point to inconsistency between areas and officers, to the risk that people admit offences they did not commit in order to avoid court, and to the absence of the safeguards a trial provides, since the decision is made by the investigating authority rather than by a court. Conditional versions attaching requirements have expanded the range. Use has fluctuated considerably with policy, which itself indicates that the decisions are driven by more than the offences.

One meaning is the warning given before questioning, whose wording is prescribed and whose omission can exclude evidence, and the English version qualifies the right to silence. The other is a disposal instead of prosecution requiring an admission and consent. That admission is recorded, appears on enhanced employment checks and can affect travel, which people accepting one routinely underestimate.