3.5 Prosecution & Defence Disclosure
Key Takeaways
- Initial prosecution disclosure under Section 3 of the CPIA 1996 requires disclosing any unused material that might reasonably be considered capable of undermining the prosecution case or assisting the defence.
- A Defence Disclosure Statement (DDS) is mandatory in Crown Court proceedings and must be served within 28 days of initial prosecution disclosure under Section 5 and Section 6A of the CPIA 1996.
- The DDS must explicitly state the nature of the defence, factual disputes, points of law, positive evidence, and full contact details for any alibi witnesses.
- Section 8 of the CPIA 1996 allows the defence to apply for a court order compelling further prosecution disclosure, provided a compliant DDS has already been served.
- Failure to serve a compliant or timely DDS enables the court or jury to draw adverse inferences under Section 11 of the CPIA 1996 and can restrict the presentation of unnotified defences.
3.5 Prosecution & Defence Disclosure
The law of criminal disclosure ensures fair trials by preventing 'trial by ambush' and guaranteeing that defendants have access to exculpatory material held by the state. Pre-trial disclosure in England and Wales is governed by the Criminal Procedure and Investigations Act 1996 (CPIA 1996) (as amended by the Criminal Justice Act 2003) and the Attorney General's Guidelines on Disclosure (2022/2024).
Unused Material & Police Schedules (MG6 Forms)
During an investigation, police gather both "used material" (evidence served to prove the prosecution case) and "unused material" (material collected during the investigation that the prosecution does not intend to rely upon at trial).
The police disclosure officer must inspect and schedule unused material using standard forms:
- Form MG6C: Schedule of Non-Sensitive Unused Material (e.g. unused witness statements, CCTV footage, crime logs, officer notebook entries).
- Form MG6D: Schedule of Sensitive Unused Material (e.g. confidential informant details, covert surveillance techniques, commercially sensitive data).
Initial Prosecution Disclosure: Section 3 CPIA 1996
Under Section 3 of the CPIA 1996, the prosecution MUST disclose to the accused any unused prosecution material which:
"might reasonably be considered capable of undermining the case for the prosecution against the accused OR of assisting the case for the accused."
The Single Objective Test
Prior to the Criminal Justice Act 2003 amendments, disclosure was divided into primary and secondary stages with different legal tests. CPIA 1996 now establishes a single objective test for all prosecution disclosure.
Timing & Service
Initial disclosure must be served as soon as reasonably practicable after the case is sent to the Crown Court or after a not guilty plea is entered in the magistrates' court. If there is no material meeting the Section 3 test, the prosecution must serve a formal written notice declaring "nil disclosure".
Defence Disclosure Statement (DDS): Sections 5 & 6A CPIA 1996
Following initial prosecution disclosure, the procedural burden shifts to the defence to set out its case in writing.
Mandatory vs Voluntary Status
- Crown Court: Service of a Defence Disclosure Statement (DDS) is MANDATORY under Section 5 of the CPIA 1996.
- Magistrates' Court: Service of a DDS is VOLUNTARY under Section 6 of the CPIA 1996 (though practically necessary if seeking a court order for further disclosure).
Statutory Time Limit
In Crown Court proceedings, the DDS MUST be served within 28 days of the prosecution serving (or declaring nil) initial disclosure. (In magistrates' court, within 14 days if served). An extension of time may be granted by the court, but the application MUST be made before the 28-day period expires.
Mandatory Contents of DDS (Section 6A CPIA 1996)
Under Section 6A, a compliant DDS must set out in writing:
- The nature of the defence, including any specific defences relied upon (e.g. self-defence, alibi, consent, duress, automatism);
- The matters of fact on which the defendant takes issue with the prosecution, explaining why;
- Any particulars of fact on which the defendant intends to rely for the purpose of the defence;
- Any point of law (including evidence admissibility or abuse of process) the defence intends to raise, with supporting legal authorities;
- Alibi Details: If relying on an alibi, supplying the name, address, and date of birth of any alibi witness (or any information identifying or locating them).
Prosecution Continuing Duty & Defence Section 8 Applications
- Prosecution Continuing Duty (Section 7A CPIA 1996): Disclosure is a continuous obligation. Following service of a DDS, the prosecution must re-evaluate all unused material in light of the defence case and disclose any newly relevant material meeting the Section 3 test.
- Defence Section 8 Application: Under Section 8 of the CPIA 1996, if the defence has served a compliant DDS and has reasonable cause to believe the prosecution holds undisclosed material meeting the Section 3 test, the defence may apply to the court for an order compelling disclosure. A Section 8 application CANNOT be entertained unless a valid DDS has been served first.
Public Interest Immunity (PII)
Under Section 3(6) and Section 7A(8) of the CPIA 1996, material that satisfies the Section 3 disclosure test MAY be withheld if it is protected by Public Interest Immunity (PII).
PII applies where disclosure would create a real risk of serious harm to the public interest (e.g. revealing informant identity, covert surveillance techniques, or national security operations). The prosecution must apply to the court for a PII ruling (often ex parte). The judge performs a balancing test (R v H and C [2004] UKHL 3), weighing public interest protection against the defendant's right to a fair trial. If non-disclosure deprives the defendant of a fair trial, the judge orders disclosure, requiring prosecution to either disclose or drop the charge.
Statutory Sanctions for Defence Non-Compliance: Section 11 CPIA 1996
| Non-Compliance Breach | Statutory Consequence under Section 11 CPIA 1996 |
|---|---|
| Failure to serve DDS in Crown Court | Court or jury may draw adverse inferences in deciding guilt. |
| Late service of DDS after 28 days | Adverse inferences; court comment permitted. |
| Setting out inconsistent defences | Adverse inferences regarding credibility. |
| Unnotified Alibi Witness | Alibi witness cannot be called without leave of the court. |
| Unnotified Point of Law | Court may refuse to hear legal argument or order costs. |
During a Crown Court trial for burglary, the prosecution possesses an unused statement from a security guard stating that the suspect observed running from the scene was six inches taller than the defendant. Which statutory test under Section 3 of the CPIA 1996 dictates whether the prosecution must disclose this statement to the defence?
A defendant is sent to the Crown Court for trial on an indictment charging robbery. Prosecution initial disclosure is served on 1 May. The defence proposes to rely on an alibi defence and raise a point of law regarding identification procedure breaches under PACE Code D. By what date must the Defence Disclosure Statement (DDS) be served under Section 5 and Section 6A of the CPIA 1996, and what must it contain?
A defendant in a Crown Court trial fails to serve a Defence Disclosure Statement within the statutory 28-day period and provides no explanation. At trial, the defendant suddenly calls an unnotified alibi witness. What statutory sanction may the court or prosecution invoke under Section 11 of the CPIA 1996?