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Attorney General’s Reference and Unduly Lenient Sentences

How unduly lenient sentences can be referred for review.
Andrew Ford – senior solicitor at Holborn Adams criminal defence
Andrew Ford
September 2, 2026
unduly lenient sentence challenge uk

Table of Contents

An unexpectedly low sentence can leave serious questions about whether the punishment properly reflects the offence. The Attorney General can refer a potentially unduly lenient sentence to the Court of Appeal for review in a limited number of circumstances. An unduly lenient sentence challenge in the UK will require careful consideration of the statutory scheme, eligibility, and time limits, as well as the individual circumstances of the case.

At Holborn Adams, we focus on sentence-related proceedings. We analyse the sentencing comments, applicable legislation, and guideline position; we consider whether the sentence is within the powers of the Attorney General and we consider the procedural options. The aim is to establish the position quickly and provide clear advice on what can realistically be done.

Attorney General’s Reference and Unduly Lenient Sentences

Grounds for an Attorney General's Reference

An Attorney General's Reference is not an ordinary appeal against a sentence. It is a specific statutory mechanism that allows the Attorney General to refer certain sentences imposed in the Crown Court to the Court of Appeal where they appear unduly lenient.

The scheme applies only to qualifying offences. A sentence does not become challengeable simply because it appears low or because a different sentence might have been imposed.

The Court of Appeal considers whether the sentence was unduly lenient in the legal sense. The court has regard to the principles applicable to sentencing, the circumstances of the offence, and the offender and whether the sentence is outside the bounds of what could have reasonably been imposed.

What Does Unduly Lenient Mean?

A sentence may be described as unduly lenient if it falls outside the range of sentences reasonably available to the sentencing judge and is substantially less than the sentence that should have been imposed.

That is a demanding test for an unduly lenient sentence challenge in the UK. A sentence sitting towards the lower end of the proper range will not necessarily qualify.

The Attorney General's Reference process is therefore distinct from a defendant's own appeal against sentence. The relevant legal route depends on the circumstances and the party seeking to challenge the sentence.

Evidence, Sentencing Remarks, and Case Material

Sentence-related challenges depend heavily on the material available to the court.

The sentencing remarks are particularly important. They explain the judge's approach, including the findings made about culpability, harm, aggravating and mitigating features, and any reduction applied for a guilty plea.

The indictment, prosecution case, defence mitigation, sentencing guideline, and relevant orders may also need to be reviewed.

Fresh evidence is not normally the central issue in an Attorney General's Reference. The focus is generally on whether the sentence imposed was unduly lenient based on the material and circumstances before the sentencing court.

A post-charge solicitor can help identify the documents that need to be obtained and reviewed before any position is reached.

The sentencing calculation may also require close examination. Errors concerning statutory provisions, sentencing guidelines, credit for a guilty plea, or the totality principle can materially affect the final sentence.

Deadlines and the Reference Procedure

Strict time limits apply to Attorney General's References.

The Attorney General must make a reference within 28 days of the date of sentence for a qualifying sentence. This makes prompt consideration important. The statutory framework should always be checked against the circumstances of the individual case.

The process is not an open-ended opportunity to revisit the sentence. The reference must fall within the relevant statutory provisions, and the Court of Appeal must determine whether the sentence meets the legal test for being unduly lenient.

In the case of an appeal to the Court of Appeal, the judges will examine the sentence and the submissions of the parties. The defendant has the right to submissions and legal representation.

Anyone concerned about a sentence should therefore seek prompt advice rather than assuming that the position can be reviewed at a later stage.

What Outcomes Are Possible?

The Court of Appeal has specific powers when an Attorney General's Reference succeeds.

If the court is satisfied that the original sentence was unduly lenient, the court may quash that sentence and replace it with a more severe sentence. When doing so, the court must have regard to the relevant statutory framework.

This creates an important distinction from an ordinary appeal brought by a defendant. An Attorney General's Reference is capable of resulting in an increased sentence.

The court will consider the circumstances of the case carefully before deciding whether to intervene. A successful reference does not mean that the maximum sentence possible will be imposed automatically. The Court of Appeal has discretion as to whether or not to increase the sentence even if it finds the sentence was unduly lenient.

It is contingent upon the severity of the offence, the sentencing system, the original sentence, and the reasons given by the sentencing judge.

Practical and Financial Considerations

A sentence review can include detailed analysis of legal authorities, sentencing guidelines, and the judge’s rationale.

The work involved will vary depending on the complexity of the case. Some matters may turn on a fairly obvious sentencing issue, while others may require a careful consideration of the factual findings and the guidelines that apply.

A specialist solicitor should explain the likely scope of work and associated costs at the outset. Counsel may also be instructed if the legal or factual issues require specialist advocacy.

Preparing for the Possibility of a Reference

If you have been sentenced and believe the sentencing decision or calculation may contain an error, prompt advice is important. The relevant sentencing papers should be preserved, including the sentencing remarks and any written submissions relied upon at the hearing.

A person facing a potential Attorney General's Reference should also understand that the process can expose them to the possibility of a higher sentence. Advice should therefore address both the prospects of the reference and the potential consequences.

How Holborn Adams Approaches Sentence Challenges

  • Detailed sentence review: We examine the sentencing remarks, guideline position, and relevant statutory provisions.
  • Case analysis: We identify errors in principle, calculation, or application of the sentencing framework.
  • Procedural advice: We explain the relevant reference or appeal process and applicable time limits.
  • Counsel's input: Specialist advocates can be instructed where the issues require detailed appellate analysis.
  • Clear advice: We explain the realistic outcomes and potential risks before further action is taken.

Practical Cautions

  • Do not assume that a sentence is unduly lenient simply because it appears low
  • Do not overlook the strict time limits that apply to an Attorney General's Reference
  • Preserve the sentencing remarks and all relevant court documents
  • Obtain specialist advice before taking steps that could affect the position
  • Remember that a successful reference can result in a more severe sentence

What is the Next Step?

An unduly lenient sentence challenge in the UK requires a considered comparison of the sentence with the legal framework that it must meet. The fact that a sentence appears low is not grounds alone. The statutory requirements, time limits, and sentencing principles all need to be considered.

If you are concerned about a sentence or have been told that an Attorney General's Reference may be pursued, prompt advice can help clarify the position. Post-charge solicitors can review the sentencing material, explain the relevant procedure, and advise on all risks and potential outcomes.

This article is intended for general information only and should not be relied upon as legal advice. For confidential assistance, contact Holborn Adams to speak directly with a solicitor.

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Andrew Ford | Director | Holborn Adams
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