At Best Sydney Criminal Lawyers, we understand the profound stress and complexity involved in criminal appeals. A criminal appeal is often the final lifeline for individuals who believe they have been the victim of a wrongful conviction or an excessively harsh sentence.
This guide outlines the critical steps for appealing a criminal conviction in Sydney, from understanding the strict time limits to identifying valid legal grounds. We also explore how our strategic partnership with firms like Jameson Law allows us to provide comprehensive resources for complex multi-jurisdictional matters.
What Are Criminal Appeals in Sydney?
Definition of Criminal Appeals
In the New South Wales justice system, a criminal appeal is a formal application to a higher court to review the decision of a lower court. Unlike a trial, an appeal does not usually involve re-hearing witness testimonies. Instead, it focuses on identifying legal errors or miscarriages of justice that occurred during the original proceedings.
Types of Criminal Appeals
NSW law distinguishes between several categories of appeals, primarily:
- Conviction Appeals: Arguments that the guilty verdict was unsafe or unsatisfactory.
- Sentence Appeals: Arguments that the penalty imposed was manifestly excessive (severity appeal) or, in prosecution appeals, manifestly inadequate.
Strict Time Limits for Appeals
Time is the most critical factor in any appeal. In NSW, you typically have a strictly enforced window of 28 days from the date of conviction or sentencing to file a Notice of Intention to Appeal.

Failure to lodge forms within this timeframe significantly jeopardises your right to appeal. While you can apply for “leave to appeal out of time,” the court requires compelling reasons to explain the delay.
The Appeal Process vs. Retrials
It is a common misconception that an appeal is simply a “do-over.” The Court of Criminal Appeal (CCA) does not typically hear new evidence unless it is “fresh”—meaning it was unavailable at the time of the trial and is highly relevant. The court’s primary role is to determine if the original trial was conducted fairly according to the law.
Why Appeal a Criminal Conviction in Sydney?
You cannot appeal simply because you are unhappy with the result. You must establish specific legal grounds. Common grounds include:
Errors in Law or Fact
Appeals often succeed when the defence proves the trial judge made an error in directing the jury or applying the law. Judicial guidelines are strict, and even a minor procedural error can sometimes lead to a miscarriage of justice.
New “Fresh” Evidence
If significant new evidence emerges after the trial—such as DNA results, a retracted witness statement, or proof of perjury—this can form the basis of a strong appeal. The court assesses whether this evidence, if available earlier, would have likely altered the jury’s verdict.
Unreasonable Verdict
An appeal may be lodged if the jury’s verdict is unreasonable or cannot be supported by the evidence presented. The standard of proof remains “beyond reasonable doubt,” and if the appellate court finds the evidence was insufficient to meet this threshold, the conviction may be quashed.
Severity of Sentence
Appealing the severity of a sentence is a strategic decision. Our team analyses comparable cases to determine if your sentence falls outside the “sentencing range” for similar offences. Statistics from the NSW Bureau of Crime Statistics and Research indicate that approximately 30% of severity appeals result in a reduced sentence.

How Does the Criminal Appeal Process Work?
1. Initiating the Appeal
The process begins with the Notice of Intention to Appeal. Once filed, this prevents the sentence administration from finalising certain aspects, keeping the matter “live.” Following this, your legal team typically has up to 12 months (though often less) to file the formal grounds of appeal.
2. Preparing for Court
Preparation is exhaustive. We review thousands of pages of trial transcripts to find inconsistencies. We may collaborate with external experts or partner firms like Jameson Law to scrutinise forensic evidence or complex points of law.
3. The Appeal Hearing
Hearings in the Court of Criminal Appeal are conducted before a panel of three (sometimes five) judges. These are highly technical legal arguments presented by senior counsel. The appellant is usually present but does not give evidence.
4. Potential Outcomes
The Court has three main options:
- Dismiss the appeal: The original conviction and sentence stand.
- Allow the appeal and acquit: The conviction is quashed, and the person is free.
- Allow the appeal and order a retrial: The conviction is quashed, but the case is sent back for a new trial.
- Resentence: In severity appeals, the court may impose a lesser penalty.
Final Thoughts
Navigating the appellate jurisdiction requires a solicitor with specific experience in the NSW Court of Criminal Appeal. At Best Sydney Criminal Lawyers, we are dedicated to correcting miscarriages of justice. Our team, supported by the broader expertise of our network including Jameson Law, ensures that every legal avenue is explored.

If you are considering an appeal, do not wait. The strict 28-day time limit is ticking. Contact us immediately to discuss your prospects of success and protect your future.