Expert Witnesses - how to find one
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 It may omit detail or fall out of date.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.
The CPS prosecution guidance on expert witnesses provides guidelines for finding qualified expert witnesses in the criminal justice system. It explains the CPS's position on not maintaining a register of experts due to independence and quality assurance concerns. Additionally, it outlines sources of information for locating experts and highlights important considerations when selecting an expert witness, including adherence to relevant procedural rules.
Key points
- CPS does not maintain a register of expert witnesses to avoid endorsing individuals.
- Quality assurance of expert witnesses is conducted on a case-by-case basis.
- The National Crime Agency holds a database formerly managed by the NPIA.
- The Forensic Science Regulator sets quality standards for forensic services.
- Expert witnesses should comply with Criminal Procedure Rules when providing evidence.
- Further information can be found in CPS Guidance for Experts on Disclosure.
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.