Disclosure Manual: Chapter 31 - Cases Using Holmes
Plain-English digest of CPS prosecution guidance.
AI-generated summary — not verbatim. This is a plain-English digest, not the official CPS text. It may omit detail or fall out of date. Do not rely on it for a charging decision — read the full guidance on cps.gov.uk and check the current legislation.
This guidance covers the procedures and responsibilities for the disclosure of material in major inquiries utilizing the Home Office Large Major Enquiry System (Holmes). It outlines the role of the disclosure officer, the management of sensitive and non-sensitive materials, and the requirements for proper documentation and communication with prosecutors. The guidance emphasizes the importance of assessing materials thoroughly and maintaining rigorous records throughout investigations.
Key points
- Holmes is utilized for large-scale investigations to manage and disclose evidence.
- Disclosure officers must be trained in using Holmes and have sufficient authority for their role.
- Materials must be categorized as sensitive or non-sensitive according to established guidelines.
- The volume of unused material must be reported to the prosecutor in phases.
- Material casting doubt on a confession or witness reliability is likely to meet the disclosure test.
- Block entries can be used for similar items to manage volume efficiently.
This is a factual digest of guidance published by the Crown Prosecution Service. Digested 2026-07-15. BlueLineHub is independent and not affiliated with the CPS.