The Right to Silence in England and Wales: The Police Caution and Adverse Inferences Explained

Anyone who has watched a US crime drama has heard some version of "you have the right to remain silent." The caution given by police in England and Wales starts the same way — but ends very differently. Under the Police and Criminal Evidence Act 1984 (PACE) and the Criminal Justice and Public Order Act 1994, staying silent during questioning can, in specific and limited circumstances, be held against you at trial. That single difference from the American approach is the most important thing to understand about the right to silence in this jurisdiction.

The Caution: Exact, Fixed Wording

Unlike the US, where the Supreme Court has said no single script is required, the caution in England and Wales has fixed statutory wording set out in PACE Code C, paragraph 10.5: "You do not have to say anything. But it may harm your defence if you do not mention when questioned something which you later rely on in court. Anything you do say may be given in evidence." It must be given before someone is interviewed about their suspected involvement in an offence, and again after any break in questioning, arrest, or if the officer forgets whether it was already given.

Adverse Inferences Under Sections 34–37

The core rule sits in section 34 of the Criminal Justice and Public Order Act 1994: if, when questioned under caution before being charged, a person fails to mention a fact they later rely on in their defence at trial — a fact it would have been reasonable to mention at the time — the court or jury may draw "such inferences as appear proper" from that silence. Related provisions extend the principle: section 36 covers failing to account for an object, substance, or mark found on you; section 37 covers failing to account for your presence at a particular place. In each case, the inference is that the explanation later given may have been invented after the fact, precisely because it wasn't offered when it mattered.

Crucially, an adverse inference is only ever part of the picture. Following R v Cowan [1996], juries are directed that they cannot convict solely on the strength of an inference from silence — the prosecution must first establish a case to answer on other evidence, and only then may the inference be used to strengthen that case.

When the Adverse-Inference Regime Doesn't Bite

Several protections limit when section 34 can actually be used against someone. Following R v Argent [1997], courts weigh factors including the suspect's age, experience, mental capacity, and — significantly — whether they had access to legal advice and whether it was reasonable for them to rely on it. A suspect who stayed silent specifically on their solicitor's advice, given at the police station, is in a materially different position than one who simply refused to engage; genuine reliance on legal advice is a recognised, and often successful, answer to a proposed adverse inference, though it is not an automatic shield in every case. Special protections also apply to juveniles and vulnerable suspects, who must have an "appropriate adult" present during questioning.

The Right to Free Legal Advice

This is the safeguard that makes the whole system workable: under PACE section 58 and Code C, anyone held in police detention has the right to consult a solicitor privately and free of charge, at any time, through the duty solicitor scheme if they don't have their own. Given how much the section 34 analysis turns on whether legal advice was taken and reasonably relied upon, asking for a solicitor before answering any substantive question is the single most protective step available — it should never be treated as an admission of guilt or held against you for asking.

How This Differs From "Miranda"

The core contrast with the US Miranda warning is direct: an American suspect who is warned is told, in effect, that silence carries no cost at all. A suspect cautioned in England and Wales is told the opposite — that silence can harm their defence, in the specific circumstances the 1994 Act sets out. Both systems protect a right not to be forced to speak; they differ sharply on what happens to a defence built on staying silent at the police station and then explaining everything for the first time at trial.

Sources & Further Reading

• Police and Criminal Evidence Act 1984 (PACE), section 58, and PACE Code C (2023 revision)
• Criminal Justice and Public Order Act 1994, sections 34–37
• R v Argent [1997] 2 Cr App R 27 — factors relevant to legal-advice reliance
• R v Cowan [1996] QB 373 — jury direction limits on drawing inferences

Practical Next Steps

If you are arrested or asked to attend a voluntary interview under caution, ask for a solicitor before answering substantive questions — it is free, it is your right, and it materially affects how any later silence is assessed. If you're unsure whether to answer a specific question, that uncertainty is itself a reason to get advice first rather than guess. For the general, worldwide picture of what happens when you're arrested, see What Are Your Rights If You Are Arrested?

This article is general legal information, not legal advice, and covers England and Wales specifically — Scotland and Northern Ireland have their own separate criminal procedure. Consult a solicitor before acting on anything here.