This guide is maintained as a current resource for September 2026 and covers only the laws of England and Wales. Information is for general guidance, not legal advice. Consult a qualified solicitor for advice specific to your situation.
Discover how appeals challenge jury decisions in England and Wales, including the legal test for unsafe convictions, procedural fairness, jury irregularities, new evidence and the role of the Criminal Cases Review Commission in identifying miscarriages of justice.
In England and Wales, jury trials are central to the criminal justice system. Juries of ordinary members of the public decide whether a defendant is guilty beyond reasonable doubt. However, juries are human and, on occasion, a verdict may be affected by legal error, procedural unfairness, unreliable evidence or other factors that seriously undermine confidence in the result. When that happens, a convicted person can seek to challenge the jury's decision through the appeals process. This article explains how that process works and the mechanisms by which jury decisions can be scrutinised, set aside or corrected.
1. The Purpose and Scope of Appeals
An appeal against a jury verdict is not a re‑trial of facts in the sense of re‑hearings in front of another jury. Instead, the focus is on whether the conviction is “unsafe” - that is, whether there were errors or issues in the original trial that mean the verdict cannot be relied on. Courts treat juries' factual conclusions with respect but will intervene if legal or procedural fairness was compromised.
In criminal cases from the Crown Court, the appeal is heard by the Criminal Division of the Court of Appeal. Applications must generally be made within 28 days of conviction, and permission to appeal is required unless the trial judge certified the case as fit for appeal.
2. The Legal Test: Unsafe Verdicts
Section 2 of the Criminal Appeal Act 1968 states that the Court of Appeal must allow an appeal against conviction if it thinks the conviction is unsafe and dismiss the appeal in any other case. In practice, the court considers all the circumstances, including legal errors, procedural fairness and any new information, when deciding whether safety is undermined.
The notion of unsafe verdict is not limited to clear legal mistakes. In rare cases, the Court of Appeal has considered a so‑called “lurking doubt” - a situation where judges feel uneasy about the verdict despite no obvious procedural or legal flaw - although this principle is seldom successful and its use is debated.
3. Legal Errors Affecting Jury Decisions
A central basis for challenging a jury's verdict on appeal is that the trial judge made a legal error affecting the jury's decision. Examples include:
- Incorrect jury directions - if the judge gave the jury the wrong instructions on how to apply legal tests (for example, burden or standard of proof), the verdict may be unsafe.
- Misapplication of law to evidence - such as failing to properly explain how a defence works or mischaracterising elements of the offence.
Appeal courts have repeatedly made clear that a judge cannot direct a jury to return a guilty verdict; juries must decide themselves based on evidence and correct legal direction. A leading House of Lords case confirmed that any attempt to instruct a jury what verdict to return is unlawful.
4. Procedural Fairness and Jury Irregularities
If the trial process was compromised in a way that may have influenced the jury, the conviction can be open to challenge. Allegations of jury irregularities include:
- Juror misconduct, such as seeking out information outside evidence presented in court or discussing the case with outsiders.
- Bias or prejudice, where a juror's partiality may have affected deliberations.
However, investigating misconduct is difficult because of strict rules around jury secrecy. Even where conduct is suspected, courts and review bodies are cautious about intruding into jurors' deliberations. Proposals for reform would give greater statutory powers to investigate and refer cases involving alleged jury misconduct.
If an appeal contains grounds alleging a jury irregularity, a registrar may refer the case to a full court, which might then direct the Criminal Cases Review Commission (CCRC) to investigate further.
5. Fresh Evidence and Changes in Understanding
Appeals can also challenge jury decisions by introducing fresh or new evidence that was not available at the original trial. This must generally be credible, relevant and capable of affecting how a reasonable jury would have resolved key issues. If new evidence meets these criteria, the CCRC may refer the case back to the Court of Appeal, and the court can then decide whether the conviction remains safe.
High‑profile cases illustrate how new evidence can lead to convictions being quashed years after trial. In one example, flaws in forensic evidence and unreliable hearsay led the Court of Appeal to deem the original verdict unsafe and overturn the conviction.
6. The Role of the Criminal Cases Review Commission (CCRC)
The CCRC is an independent statutory body that reviews alleged miscarriages of justice where ordinary appeal routes have been exhausted. It can refer cases back to the Court of Appeal if it considers there is a real possibility that the conviction would not be upheld, based on new evidence or a new argument that significantly changes the case. The standard is not simply that the jury was wrong, but that new information may have altered the verdict.
The CCRC's remit includes considering cases where a jury's verdict may have been affected by previously unknown issues such as procedural errors, undisclosed evidence, or credible new expert information. Once referred, it is for the appeal court to decide whether the conviction is unsafe.
7. Limits on Challenging Jury Decisions Directly
It is important to understand that appeals focus on errors or issues in the trial process, not simply disagreement with the jury's fact‑finding. There is no automatic right to appeal just because the jury may have misunderstood evidence or reached a different conclusion. The Court of Appeal does not act as a third jury; it must be shown that the trial was flawed in law, procedure, evidence handling or that compelling new evidence exists.
Re‑weighing evidence or reassessing witness credibility alone is generally not a ground for overturning a jury's verdict unless it ties into broader legal or procedural unfairness.
8. Practical Steps and Time Limits
To challenge a jury decision:
- A convicted person must lodge a notice of appeal with grounds explaining why the conviction is unsafe, usually within 28 days of conviction.
- Permission to appeal must typically be obtained.
- If the CCRC is involved, applicants usually must have first pursued an appeal before applying for a review.
Because the appeals process involves strict deadlines and detailed procedural requirements, early action and careful preparation of grounds are essential.
Summary
Challenging a jury decision through appeal in England and Wales is a structured process focused on whether the original conviction is unsafe. Appeals can succeed where:
- the trial judge made legal errors that affected the jury;
- there were procedural irregularities or misconduct potentially impacting deliberations;
- significant new evidence emerges that could have changed how a jury would reasonably have decided; or
- the case is referred by the Criminal Cases Review Commission on the basis of fresh evidence or arguments.
The appeals process does not allow simple disagreement with a jury's verdict. Instead, it provides a legal mechanism to correct miscarriages of justice and ensure that convictions rest on a fair and lawful foundation. Understanding these principles can help clarify when and how jury decisions may be successfully challenged.
