What Is an Appeal Against Conviction?

An appeal against conviction is the formal legal process by which a person who has been found guilty of a criminal offence in England and Wales asks a higher court to review and overturn that conviction. It provides a mechanism for correcting errors of law or fact, addressing unfair trials or miscarriages of justice, and ensuring that criminal verdicts are safe and justified within the legal system. Appeals sit at the heart of the criminal justice system's commitment to fairness, legal clarity and the rule of law.

This guide explains when an appeal can be made, how it works, what rights the appellant has, relevant time limits, possible outcomes and further review options for convictions that have already been through the appeal process.

What an Appeal Against Conviction Means

A conviction appeal is not a re‑trial in the ordinary sense. Instead, it is a review by a higher court of the legality, fairness and safety of the original verdict. If successful, the appeal can result in the conviction being quashed (set aside), varied, or in some cases the sentence being reconsidered.

In criminal cases in England and Wales, the usual route for a conviction appeal is through the Court of Appeal Criminal Division (CACD).

Grounds for Appealing a Conviction

You may appeal against a conviction if you believe that:

• The trial was procedurally unfair (for example, the jury was misdirected, evidence was wrongly excluded, or there were errors of law).
• The conviction was unsafe, meaning the evidence was insufficient or flawed.
• There was a significant error of law during the original trial.

Before the appeal can be heard, the appellant must show there are legitimate grounds on which the higher court ought to reconsider the case.

Where and How to Appeal a Conviction

Crown Court Convictions

If a person is convicted in the Crown Court, they must apply for permission to appeal to the Court of Appeal Criminal Division. This application must normally be made within 28 days of the conviction date.

To begin the process, the appellant (or their legal representative) completes a notice and grounds of appeal form (often referred to as Form NG) and submits it to the Criminal Appeal Office.

A judge at the Court of Appeal will then decide whether to grant permission to appeal. If permission is granted, the appeal proceeds to a full hearing before a panel of Court of Appeal judges.

Magistrates' Court Convictions

If the conviction occurred in a Magistrates' Court, the appeal generally goes to the Crown Court. In this setting:

• If the appellant pleaded not guilty at trial, they can appeal the conviction on the basis that it was wrong.
• If they pleaded guilty, they can generally only appeal the sentence.
• Appeals from the Magistrates' Court are heard as re‑hearings, meaning evidence can be reconsidered and additional evidence can be presented.

The Crown Court can confirm, vary or overturn the magistrates' decision, or send the case back with directions.

Time Limits and Permission to Appeal

Time limits are strict in criminal appeals:

• 28 days from conviction to seek permission to appeal a Crown Court conviction.
• If that deadline is missed, it may still be possible to seek permission out of time, but the appellant must explain the delay and provide supporting reasons.

Not all applications automatically proceed to a full appeal hearing. In many cases, permission to appeal must first be granted by a single judge, or, if initially refused, renewed before the Court of Appeal.

What Happens at an Appeal Hearing

If permission to appeal is granted, a hearing is scheduled before a panel of judges in the Court of Appeal; the appellant's legal representative (if any) presents arguments on why the conviction is unsafe or flawed. The prosecution also has an opportunity to respond.

Judges will consider whether the conviction stands based on the legal and evidential issues raised. The appeal hearing is not another trial, but a legal review of the earlier process and verdict.

Possible Outcomes of a Conviction Appeal

Following a conviction appeal, the Court of Appeal may:

• Quash the conviction if it finds the original verdict unsafe.
• Uphold the conviction if no substantial error is found.
• Vary the conviction in limited circumstances.
• Re‑sentence the appellant if the conviction is upheld in relation to sentence.

If a conviction is quashed, the appellant may regain the legal status they had prior to conviction, which can have extensive implications for criminal records and subsequent disability or employment issues.

What If an Appeal Is Unsuccessful?

If an appeal against conviction is refused or fails at hearing, the conviction stands. In such circumstances, there are limited further avenues for review.

Seeking Further Review: Criminal Cases Review Commission (CCRC)

If all ordinary appeal avenues are exhausted, an individual may apply to the Criminal Cases Review Commission (CCRC). The CCRC is an independent statutory body that can examine potential miscarriages of justice and, in exceptional circumstances, refer cases back to the Court of Appeal even after the usual appeal process is over.

Applications to the CCRC are free and can be made by the appellant or on their behalf, but the Commission generally requires that all standard appeal routes have been explored first, unless there are very rare exceptional circumstances.

Rights and Representation

Appellants do not need a solicitor or barrister to lodge an appeal, but legal advice is often essential given the complexity of criminal appellate law, procedural rules and evidential standards.

Victims and witnesses may also have procedural rights in appeals, such as receiving notification of hearing dates and outcomes, under wider criminal justice policy.

Practical Considerations and Legal Costs

Criminal appeals can be costly, complex and time‑sensitive. Appellants should prepare to:

• Understand and meet strict deadlines for filing notices and applications.
• Present cogent legal grounds that the conviction is unsafe or unlawful.
• Consider the potential impact on sentencing or collateral matters (criminal records, rehabilitation, employment).

Securing representation from solicitors or counsel experienced in criminal appeals increases the chance of success, particularly at higher levels of court.

Key Takeaways

An appeal against conviction enables individuals convicted in criminal proceedings in England and Wales to have their case reviewed by a higher court when there are legitimate grounds to challenge the safety or legality of the original verdict. Most conviction appeals go to the Court of Appeal Criminal Division, and must be lodged within strict time limits with evidence of substantive error or unfairness. If ordinary appeal routes are exhausted, applications to the Criminal Cases Review Commission may be possible in exceptional cases. Understanding the process, legal thresholds and potential outcomes helps those affected navigate the appeal system effectively.