Police-Station Rights, Detention and Lawful Interview: Introduction

Police-station work is a sequence of status and safeguards. At every stage ask: Is the person arrested or attending voluntarily? What power authorises the next step? When did the custody clock start? Which rights and participation safeguards are active? Is interview lawful and strategically advisable? What decision follows?

Here, police custody means detention under police control. An interview is offence questioning which requires a caution; the detailed definition and safeguards appear in section 7. An appropriate adult is a suitable person who supports a child or vulnerable suspect and safeguards their participation, not a replacement lawyer. Admissibility asks whether evidence may be used in proceedings; weight asks how persuasive that evidence is.

This is the beginning of the prosecution journey, not a preliminary conversation without legal consequences. An investigation gathers and tests information about a suspected offence; a charge is a formal accusation, not a finding of guilt. What happens now can later determine whether a witness's identification can be trusted, whether an admission can be used, whether silence supports an inference, and whether the trial is fair. Preserve the original account and records, not merely a later summary of them. The governing framework is the Police and Criminal Evidence Act 1984 (PACE) and its statutory Codes, with the Criminal Justice and Public Order Act 1994 (CJPOA) governing specified inferences from silence. The later evidential consequences are explained in section 9.

This chapter concerns ordinary criminal investigation in England and Wales. Terrorism, national-security detention and some specialist investigators have separate or modified regimes. Do not export the ordinary PACE clocks to Scotland or Northern Ireland. The editions used here are Code C 2023 for detention, treatment and questioning, Code D 2023 for identification and samples, Codes E and F 2018 for recording, and Code G 2012 for arrest. The Code provisions are different from their accompanying Notes for Guidance: both aid understanding, but a guidance example is not itself a statutory time limit. Authority: Code C, paragraphs 1.1–1.11 and introductory application provisions; PACE, section 67.