Forensic Science Regulator Act 2021 and the Forensic Science Regulator’s Code of Practice 2023
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 It may omit detail or fall out of date.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 prosecution guidance covers the Forensic Science Regulator Act 2021 and the Forensic Science Regulator’s Code of Practice, emphasizing the statutory powers established for the Regulator and the requirements for compliance regarding forensic science activities. It details how evidence is assessed for admissibility and reliability, particularly in situations where forensic evidence does not comply with the FSR Code. Prosecutors are guided on how to approach and evaluate forensic evidence in criminal proceedings based on its compliance status with the FSR Code.
Key points
- The FSR Code applies to both prosecution and defence experts.
- Compliance with the FSR Code indicates reliability of evidence.
- Evidence that does not comply with the FSR Code may still be admissible but needs careful scrutiny.
- Prosecutors should assess the admissibility and reliability of evidence on a case-by-case basis.
- Non-compliance with the FSR Code does not automatically render the evidence inadmissible.
Public-interest factors
- Public confidence in the forensic process.
- Ensuring fairness in criminal proceedings.
- Maintaining integrity of the justice system.
- Protecting the rights of the accused.
- Promoting the reliability of forensic science.
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.