Fitness for interview: intoxication, mental health, and delays

Custody interviews should only proceed when the detainee is fit to be interviewed under PACE and Code C. This article gives accredited representatives a structured checklist, plain-language examples for raising concerns, and safe boundaries — without pretending to be a doctor. It links interview fitness to disclosure, appropriate adults, and Section 34 risk where answers may later be relied on at trial.

1. Why fitness matters in real cases

If a client answers questions while severely intoxicated, in acute mental health crisis, or unable to follow the caution and questions, the reliability of anything said is compromised. That is bad for the client, bad for the investigation’s integrity, and it creates professional risk for you and your firm if you stood by without a clear record.

Your role is not to “win” a medical argument in the corridor. Your role is to raise the issue clearly, request assessment and safeguards where Code C expects them, and record what you observed, what you asked for, and what happened next. If the interview goes ahead anyway, your note should show you gave the client a fair chance to make an informed choice.

2. What “fit” usually means (practitioner-level, not clinical)

PACE Code C expects detainees to be treated consistently with their rights and welfare. “Fitness for interview” is not a single blood test; it is a practical judgment informed by observation, disclosure of conditions, custody records, and sometimes medical assessment.

You are looking for whether the person can:

Understand why they are there and what an interview is for.
Follow questions without drifting into confusion every few seconds.
Weigh advice about silence, prepared statements, or full answers.
Withstand the stress of a formal interview without acute harm.

If you are unsure, err on the side of caution in what you say to custody staff and in your attendance note — not by inventing diagnoses, but by describing what you saw and what you need before you are comfortable.

3. Intoxication: alcohol and drugs

Alcohol intoxication is often obvious: slurred speech, unsteadiness, smell, vomiting, fluctuating mood. Drug intoxication can be less obvious but may show as agitation, drowsiness, pinpoint or dilated pupils, or disjointed thought — always describe observations, not street-drug labels.

If the client is plainly intoxicated, a recorded interview in that state is usually defensible only in exceptional circumstances, and even then you should record strong objection. Ask for medical review and consider whether the interview should be deferred until sobriety allows meaningful participation.

Remember: “fit later” is not the same as “no harm now.” If police insist on proceeding, your note should capture time, officer response, and any breaks or restarts.

4. Mental health crisis and emotional shock

Clients may present with panic, dissociation, paranoia, self-harm ideation, or an inability to stay on topic. Some will disclose diagnoses; others will not. Some crises are situational (first arrest) rather than chronic.

Where you see acute distress that interferes with comprehension, treat it as a fitness and safeguarding issue. Request healthcare involvement and consider whether an appropriate adult is required for a vulnerable adult under Code C, even when the client is over 18. Cross-read Mental health in custody.

If you believe the client cannot safely continue, say so calmly: you are not claiming psychiatric expertise; you are reporting functional inability to participate fairly.

5. Learning disability, autism, brain injury, and communication needs

Some clients need simpler language, more time, written prompts, or rephrased questions. Fatigue and sensory overload in custody can mimic “non-cooperation.” Where communication needs are known or suspected, push for adjustments before interview starts: breaks, shorter sessions, and clarity about the caution.

This is not “special treatment” in a pejorative sense — it is equality of arms so any later answer is genuinely informed. Tie this into Youth suspects procedures where age-appropriate approaches matter even when the client is an older teenager.

6. Medication, withdrawal, and sleep deprivation

Withdrawal from alcohol or certain drugs can be medically serious — you are not treating it, but you can flag risk and request review. Sedating medication may affect alertness; missed doses may affect mood or cognition. Sleep deprivation after a long night in a cell may not alone prevent interview, but combined with other factors it can tip the balance.

Record what the client tells you about medication and what custody records show where you are allowed to see them. If there is a mismatch, note it neutrally and ask for clarity.

7. Forensic medical examiner (FME) and healthcare

Forces arrange medical assessment in custody. If you have concerns, ask for an FME or healthcare assessment and record the time of the request and attendance. You are not diagnosing — you are flagging observable concern that falls within Code expectations.

If healthcare says the client is fit, you may still have separate concerns about understanding or vulnerability — those can overlap with medical clearance but are not always identical. Do not treat a short “fit” tick-box as the end of professional judgment; document why you remain worried, if you do.

8. Appropriate adults (AA): role clarity

For juveniles, an AA is routinely required. For vulnerable adults, an AA may be required where Code C applies. The AA is there to support communication and fairness, not to pressure the client to “just answer.”

Brief the AA tactfully: explain your role, the options (account, no comment, prepared statement), and how they can help by ensuring the client understands breaks and questions. If an AA becomes inadvertently directive, consider a short sidebar to realign expectations — without alienating them in front of your client.

9. Intermediaries (when communication is severely impaired)

In some cases, an intermediary may be appropriate for interview — typically arranged through formal routes rather than improvised. This is specialist territory: if you suspect severe communication barriers, escalate early to a solicitor and do not improvise complex adaptations alone.

10. Link to disclosure and interview tactics

Fitness interacts with tactical choices. A tired client may “agree” to an account they do not fully grasp. A confused client may give inconsistent answers that create problems later, including Section 34 issues if facts emerge at trial that were not clearly raised under caution.

If disclosure is inadequate, say so — see Reading disclosure. If silence is tactically sound but the client cannot understand the caution, silence is not informed silence. See Adverse inference from silence: Section 34.

11. Voluntary interviews and “non-custody” pressure

Voluntary attendance can still be high stakes. Stress, shame, and sleep loss can impair judgment even without a cell door. The same fitness questions apply: can this person follow what is happening and make a genuine choice about how to respond? See Voluntary police interview guide.

12. What to say: professional phrasing (examples)

Use calm, factual language:

“I am not satisfied my client can follow questions safely in their current state. I am asking for medical assessment before interview.”

“Please record that I have raised fitness concerns based on [specific observations]. I am asking for an appropriate adult / further review as required under Code C.”

“My client appears exhausted and disorientated. I am asking for a break and reassessment before substantive questioning continues.”

Avoid diagnosing: say what you observe and what you request.

13. If police proceed anyway

Keep a clear note of your objections and the officer’s response.
In interview, you may need to interrupt if questioning becomes oppressive or the client’s condition deteriorates — follow your firm’s policy on interventions.
If the client begins to agree to facts they do not appear to understand, consider whether to pause the interview for further advice — this is sensitive and may need solicitor input.

14. Attendance notes: what to capture

Your note should include:

Observations (behaviour, speech, coherence) proportionately.
Requests made (FME, AA, breaks) and outcomes.
Advice given on options at a level appropriate to understanding.
Any ongoing risk if the interview proceeded despite your concerns.

This protects the client and supports supervision, billing, and any later review of fairness.

15. Worked example (fictional — illustrative only)

Scenario: Adult client, first arrest, shaking, unable to retain the officer’s summary of allegation, keeps asking what “caution” means after explanation.

Possible approach: Request healthcare review and consider AA if vulnerability criteria may apply. If interview proceeds after clearance, use short check-ins with your client and consider frequent breaks. Record that comprehension was limited and what adjustments were requested.

If the custody sergeant proposes a short delay rather than a full medical review, note the compromise and whether you consider it adequate. Later readers of your file should understand why you did or did not continue to object.

This is not a script for every case — it shows how to link observation → request → record.

16. Delays, detention time, and “we need to get on”

Custody staff are under pressure to progress investigations; you are under pressure to protect your client. Those pressures can clash when you ask for delay. Stay professional: frame requests as fairness and reliability, not obstruction.

You are not managing the detention clock — but you should understand in outline that unnecessary delay can matter downstream. Your point in the room is narrower: if interview now produces unreliable answers, everyone may pay later in wasted court time or unsafe convictions. That is a process argument custody officers and officers in the case sometimes accept more readily than abstract complaints.

If an interview is postponed, ensure your client knows what happens next (further review, bail considerations, return dates) at the level you are allowed to explain — and record your limits if you are not the retained solicitor.

17. Interpreters, literacy, and “understanding” in a second language

Fluency in conversation is not the same as fluency in legal interview. If an interpreter is present, watch for summary interpretation that loses nuance. If your client is not literate, written disclosure summaries may not help. These issues overlap with fitness: someone can be sober yet still unable to process complex allegations without proper linguistic support.

Request qualified interpretation where needed and record who interpreted and whether breaks were used. See Code C on interpreters — cross-read PACE Code C — custody.

18. FAQ (representatives)

Q: The FME said “fit” but my client still looks unwell — what now?
Record your observations and escalate to a solicitor if tactics or withdrawal from interview may be needed. Medical “fitness” and your professional concern about fairness can coexist; your note should reflect both.

Q: Can I stop an interview single-handedly?
You cannot “veto” police powers, but you can object on the record, request breaks, and follow firm policy. Some situations require immediate solicitor involvement.

Q: Does fitness only matter for “no comment”?
No. A confused full answer can be worse than silence — it can lock a client into an account before disclosure is complete.

Q: Youth clients — anything extra?
Yes. Developmental maturity, fear of authority, and shame can mask as “awkwardness.” Take more time, involve the AA properly, and read Youth suspects procedures. What looks like “attitude” may be distress.

19. Related wiki articles

20. Disclaimer

General information only. Codes, force policies, and clinical realities change. Always follow current PACE codes, firm policy, insurer conditions, and your supervising solicitor on live cases. Seek urgent medical help if you believe someone is at immediate risk of harm. Nothing here replaces case-specific advice from a solicitor where reserved work, disclosure strategy, or fitness to plead may be engaged beyond a single police station attendance alone.