The Police Interview in Custody

The police interview is the moment when the investigation speaks directly to the suspect and asks for evidence in return.

The questions may sound conversational. The room may be small and ordinary. The legal effect is neither. The interview is conducted under caution, recorded, and capable of shaping searches, witness enquiries, charging advice and any eventual trial. A client answers each question once, often after hours in custody. Investigators and prosecutors may revisit the recording repeatedly, with documents, data and hindsight that the client did not possess in the room.

That imbalance does not mean the interview should be feared or resisted as a matter of course. A reliable account can expose a false assumption, identify exculpatory evidence and end an investigation. It means the interview must be managed for what it is: a permanent evidential event.

1. The interview begins before the first substantive question

Before the recording begins, the client and solicitor should already know the broad strategy and the reason for it. In custody, however, the position can change quickly. Further evidence may have been recovered, another suspect may have spoken, the allegation may have widened, or the client’s physical and mental condition may have deteriorated.

The solicitor should therefore make a final threshold check:

• Has the allegation or disclosed evidential basis changed?
• Does the client still understand the advice and wish to follow it?
• Is the client fit to be interviewed and able to participate effectively?
• Are an appropriate adult, interpreter or other communication safeguards required?
• Is the client trying to answer the case, or merely trying to escape the discomfort of custody?

The final question is often the most revealing. A client may abandon sound advice because they believe cooperation guarantees immediate release. It does not. The interview strategy must be based on the evidential position, not an unpromised outcome.

2. The formal opening is part of the evidence

The recording should identify the place, date and time, the interviewers and others present, and explain the recording process. The suspect should be cautioned and reminded of the right to legal advice. These are not empty formalities. They mark the setting in which later answers were obtained and provide the first opportunity to correct a material misunderstanding.

Code C also requires an interviewer, after caution, to put any previously unaddressed significant statement or significant silence made in the presence and hearing of police officers or staff. The suspect is asked whether the earlier statement or silence is confirmed or denied and whether anything should be added.

A significant statement is one apparently capable of being used in evidence against the suspect, particularly a direct admission. Its significance may lie in facts the client did not mean to concede: presence, ownership, knowledge, contact or control. If the wording or context is disputed, that should not be repaired through improvisation. The position can be stated precisely: what is accepted, what is disputed, and what context is required.

3. The caution sets the legal conditions; it does not choose the strategy

The familiar caution brings together three propositions: the suspect is not generally compelled to answer; a later defence may be harmed in defined circumstances if a fact was not mentioned when it was reasonable to expect it; and anything said may be used in evidence.

The caution does not mean that every silence produces an inference. Nor does it mean that answering is necessarily safer. The comparison is between different evidential risks. Silence may later affect the assessment of a defence. An answer may itself prove an element of the offence, supply a link the investigators lacked, or create an inconsistency that dominates the case.

4. Not all adverse-inference questions are the same

Section 34 of the Criminal Justice and Public Order Act 1994 may permit a court or jury to draw such inference as appears proper where a defendant later relies on a fact that was not mentioned when questioned under caution or on charge, and which it was reasonable to expect them to mention at the time. The surrounding circumstances matter, including the information available, the client’s condition and the legal advice received. Legal advice is relevant; it is not an automatic immunity from an inference.

Sections 36 and 37 address narrower situations. They concern failures or refusals to account for specified objects, substances, marks, conditions or presence at a place, and require a compliant special warning explaining the fact for which an account is sought and the possible consequence of failing to account. The solicitor must recognise when questioning has moved into that regime.

An inference is not a substitute for proof and cannot, by itself, found a conviction. But it can affect how a later account is evaluated. That is why silence must be advised, not ritualised.

5. One live method: Question → Purpose → Response → Risk → Record → Review

The interview becomes manageable when each stage is separated.

1. Question. What has actually been asked? Is it one question or several? Does it contain an assumption?
2. Purpose. Which fact, inference or legal element is the interviewer trying to establish or test?
3. Response. Under the agreed strategy, should the client answer, say they do not know or remember, seek clarification or context, or make no comment?
4. Risk. Could the response become an admission, adopt a disputed premise, create false precision, expose another legal risk or undermine a fact later relied upon?
5. Record. How will the exchange read in a transcript or sound in a clip separated from the rest of the interview?
6. Review. Has new material, a changed allegation, a significant answer or declining fitness made a private consultation necessary?

The client does not need to perform that legal analysis alone. The method explains what the solicitor is monitoring and why an apparently simple question may justify a pause.

6. A reliable answer is not the longest answer

Clients often believe that detail demonstrates honesty. Sometimes it does. It also creates more propositions capable of later comparison with CCTV, messages, telephone data, bank records and other accounts. False precision is particularly dangerous. A guessed time, reconstructed conversation or assumed motive can later be presented as a lie even where the core account was true.

A reliable witness distinguishes memory from reconstruction. The client should be able to say:

These are not evasive formulas. They are different evidential positions. The discipline is to use them accurately, not as rehearsed answers to every difficult question.

7. Loaded, compound and repetitive questions

A question may embed the very proposition that remains disputed: “Why did you transfer the stolen money?” assumes the client made the transfer, the money was stolen, the client knew its character and the destination was under the client’s control. Answering only “because I was told to” may appear to accept every earlier premise.

The response is not to argue with every question. It is to separate what is accepted from what is not. The client may reject the premise before addressing any part that can safely be answered. The solicitor may ask for the question to be recast where its form creates a material risk of misunderstanding.

Repetition is not automatically unfair. Investigators may seek clarity, test consistency or return to a topic after new evidence. But repeated questioning does not create knowledge or memory. A client should not add detail merely to produce a different answer. If the answer remains the same, it can remain the same.

8. Evidence revealed during the interview

Investigators may disclose material in stages. They may first obtain an account and then introduce a message, image, bank transaction, witness extract or item recovered from a device. That can be a legitimate means of testing whether the account is independent. It also changes the information on which the defence advice was based.

The client should not be rushed into adopting the interviewer’s description of the material. The sensible sequence may be:

1. Identify exactly what has been shown and whether it is complete.
2. Record that this is the first time the client or solicitor has seen it.
3. Ask for time to read or view it properly, including surrounding messages or pages where context matters.
4. Decide whether the client can identify it and has an actual recollection.
5. Take a private consultation if the material changes the advice.

An unclear still image need not be identified. A transaction need not be explained without the account records. A fragment of a conversation need not be accepted as the whole exchange. The recording should preserve both the material presented and the limits of what could fairly be understood at that moment.

9. The solicitor’s role: protect the client and protect the record

Code C describes the solicitor’s purpose as protecting and advancing the client’s legal rights. The solicitor may intervene to seek clarification, challenge an unfair or misleading premise, advise the client not to answer, request a private consultation, address a breakdown in communication, raise fitness or vulnerability concerns, and prevent the interview proceeding in a manner that compromises those rights.

The solicitor is not a second interviewee. They should not answer factual questions, invent an explanation, coach each response or turn every challenge into legal argument. An intervention should identify the precise risk and do no more than is needed to remove it.

A solicitor may only be required to leave where their conduct makes the interviewer unable properly to put questions. Advice to remain silent, a request for clarification or a justified intervention is not, without more, a proper basis for removal.

10. Private consultations are part of the process

The right to legal advice does not expire when the recording begins. A private consultation may be required where new evidence appears, the allegation changes, a special warning is given, the client departs from the strategy, a new legal risk emerges, or the client’s condition changes.

A break should not be delayed merely because stopping feels conspicuous. Continuing with unreliable answers does not make the interview fairer or faster. Equally, repeated breaks without a defined reason can fragment legitimate questioning. The solicitor should be able to state the trigger: new material, fresh instructions, fitness, communication or legal advice.

11. Pressure, inducement and the boundary of robust questioning

Interviewers may challenge an account, identify contradictions and accuse the client of lying. Robust questioning is not, by itself, oppression or unfairness. The legal boundary matters. Section 76 of PACE addresses confessions obtained by oppression or in consequence of things said or done likely, in the circumstances, to render a resulting confession unreliable. Section 78 gives the court a wider discretion to exclude prosecution evidence where, considering all the circumstances, admission would adversely affect the fairness of proceedings.

Code C prohibits attempts to obtain answers through oppression. It also restricts indications about what police action will follow depending on whether the suspect answers, makes a statement or refuses. A client should not be told or led to believe that confession guarantees release, that silence automatically prevents bail, or that disregarding legal advice is the route to appearing honest.

The solicitor should intervene before pressure alters the evidence, not merely note the problem afterwards. The available response may include clarification on the record, a private consultation, a welfare assessment, representations to the custody officer, or in a serious case bringing the interview to an end pending proper safeguards.

12. Fitness, fatigue and vulnerability remain live questions

Fitness is not a certificate issued once. A client may begin able to participate and then deteriorate through fatigue, distress, medication, withdrawal, pain or the cumulative effect of questioning. Code C requires the custody officer not to allow an interview that would cause significant harm to the detainee’s physical or mental state. The wider question for the defence is whether the client can understand, communicate and give reliable answers.

Warning signs include repeated misunderstanding, unexplained inconsistency, inability to concentrate, unusual suggestibility, visible distress, falling asleep, physical symptoms or inability to follow simple advice. The response may require refreshments, medication, clinical attention, an appropriate adult, an interpreter or communication aid, a longer break, postponement or termination.

The appropriate adult has a separate safeguarding role. They are not present simply to witness the process: they support and assist the person, observe fairness and facilitate communication. The solicitor supplies legal advice. Neither role makes the other unnecessary.

Code C provides for breaks at recognised meal times and, ordinarily, short refreshment breaks at approximately two-hour intervals, subject to specified grounds for delay. A justified welfare or legal break may be required sooner. The relevant test is not whether the client can endure the interview, but whether the process remains safe, fair and reliable.

13. When the strategy begins to fail

The social pressure of the room can defeat advice that the client understood in consultation. A client who intended to make no comment may answer the first friendly request for “clarification”. A client who intended to answer may become defensive and stop. A client may treat a prepared statement as the end of the strategy rather than its beginning.

The solicitor should intervene early. Once selective engagement begins, the distinction between harmless and central questions is difficult to maintain. The proper response is a private consultation, not a public argument with the client. The strategy can change, but only because the evidential or personal position has changed and fresh instructions have been obtained.

14. Two practical examples

Case study: the harmless estimate that became the allegation of lying

A professional was asked when they had last accessed a work system. Wanting to be helpful, they estimated “around lunchtime”. Access data later showed an early-afternoon login. The time was not central to the defence, but the discrepancy was repeatedly characterised as dishonesty. The better answer would have separated knowledge from estimate: the client remembered the task, not the time, and the system record could establish it accurately.

Strategic lesson. Do not manufacture precision where objective evidence can answer the question more reliably.

Case study: staged disclosure changed the interview advice

A client denied controlling an account said to have received criminal funds. Mid-interview, officers produced a cropped screenshot apparently connecting the account to the client’s email address. Rather than invite an immediate explanation, the solicitor requested the complete account-registration material and a private consultation. The wider material showed a forwarding address created and used by another person. The client then gave a limited, accurate explanation and identified evidence capable of verification.

Strategic lesson. New material should trigger inspection and fresh advice, not reflexive explanation. A fragment may change the case; it may also misdescribe it.

15. Closing the record

At the end of questioning, the client will ordinarily be given an opportunity to add or clarify anything. This is a safeguard, not an invitation to deliver an improvised closing speech. The solicitor should consider whether a material denial is unclear, an investigative request needs repeating, the client’s condition or treatment should be recorded, or nothing further should be said.

Once the recording stops, the defence should produce a prompt interview review:

• the strategy adopted and whether it was followed;
• significant admissions, denials, explanations and uncertainties;
• new evidence, offences or investigative lines disclosed;
• any special warning, disputed premise, communication problem or procedural concern;
• defence evidence requiring immediate preservation or collection;
• reasonable enquiries requested of investigators;
• the likely next custody or charging decision and any representations required;
• whether a further interview is foreseeable and what must be done before it.

Investigators will review the interview against material already held and material obtained later. The defence must do the same without delay. The essential question is: what did the interview change?

The chapter method

Key takeaway

A police interview is not a test of whether the client can sound innocent under pressure. It is a controlled opportunity for investigators to seek, test and preserve evidence. A strong defence does not make the client artificially silent or endlessly explanatory. It ensures that silence is reasoned, answers are reliable, assumptions are exposed, new material is understood and every intervention protects the integrity of the record.

The client enters the room once. The record may remain active for years.

The next chapter examines what happens around and after that interview: searches, samples, fingerprints and digital devices, including what the police may take and what the defence must protect.