A Determinate Sentence Is Unduly Lenient Where an Extended Sentence Is Necessary for Public Protection

Introduction

This Attorney General’s Reference concerned whether a determinate sentence of 75 months’ imprisonment for arson with intent to endanger life was unduly lenient. During a neighbour dispute, the offender used an accelerant and a lit blowtorch to cause an explosion on the balcony of a residential block. People were trapped close to the flames, and two individuals jumped from a second-floor balcony to escape.

The central issue was not merely the length of the custodial term. It was whether the sentencing judge had adequately addressed the offender’s dangerousness and whether an extended sentence was necessary to protect the public.

Background and Original Sentence

Following an aggressive confrontation, the offender retrieved a blowtorch and a container of fuel. He threw the fuel around the balcony and towards the stairs before igniting it. The resulting explosion occurred in close proximity to several people in a building containing multiple residences. Very serious injury was avoided largely by chance.

The offender pleaded guilty and received:

• 75 months’ imprisonment for arson with intent to endanger life;
• 16 months’ imprisonment for possessing an offensive weapon; and
• 21 months’ imprisonment for arson.

The sentences were concurrent, producing an overall term of 75 months. The sentencing judge treated the principal offence as category 2A, adopted a notional post-trial term of seven years and reduced it by 10 per cent for the guilty plea.

A pre-sentence report assessed the offender as presenting a high risk of serious harm. It recorded minimisation, absence of victim empathy and a tendency to blame others. Psychological evidence identified cognitive vulnerabilities, including difficulties with processing information and controlling impulsive reactions under emotional pressure.

Summary of the Judgment

The Court of Appeal held that the seven-year pre-credit custodial term was lenient but, viewed in isolation, not unduly lenient. The decisive defect lay in the treatment of dangerousness.

The sentencing remarks were unclear whether the judge had found that the offender was not dangerous or had found dangerousness but considered an extended sentence unnecessary. The Court of Appeal held that either conclusion was unsustainable.

The combination of the exceptionally dangerous conduct, the use of fuel and fire in a multi-occupancy building, the offender’s limited insight and the professional risk assessment established a significant risk of serious harm through further specified offending. An extended sentence was necessary for public protection.

The court therefore granted leave, quashed the sentence on the principal count and imposed an extended sentence of 11 years and 3 months, comprising:

• Custodial term: 6 years and 3 months; and
• Extended licence period: 5 years.

The concurrent sentences on the remaining counts were left unchanged.

Analysis

1. Serious harm avoided by chance

The court emphasised the distinction between harm actually caused and the risk deliberately created. Although no person suffered very serious physical injury, the offender had ignited accelerant close to several people on an elevated balcony in residential premises. The absence of catastrophic injury resulted from good fortune rather than any protective action by the offender.

Once the offence had been placed in category 2A rather than category 1A, the exceptional degree of risk justified an upward adjustment within or from the relevant guideline framework. Further adjustments were also required for aggravating factors, mitigation and totality.

2. Dangerousness and public protection

A finding of dangerousness depends on whether there is a significant risk that the offender will cause serious harm to members of the public by committing further specified offences. The assessment is predictive and must consider the current offence, previous conduct, expert material, insight and attitude towards offending.

The court relied particularly on:

• the extreme danger created by using fuel and fire in occupied residential premises;
• the escalation from an argument to potentially lethal conduct;
• the offender’s lack of insight and victim empathy;
• his minimisation and attribution of blame to others; and
• the pre-sentence report’s conclusion that he presented a high risk of serious harm.

Age, a gap in offending and the likelihood that the offender would not return to the same property did not adequately address the broader risk to the public. Dangerousness was not confined to the possibility of an identical dispute recurring at the same address.

3. Determinate and extended sentences

The court did not hold that every dangerous offender must receive an extended sentence. A determinate sentence remains legally available where it can adequately manage the risk. In this case, however, the custodial term alone did not provide sufficient protection. The extended licence period was required to manage the offender after release.

Significantly, the Court of Appeal did not increase the custodial element. It retained the 75-month term but added five years of extended licence. This demonstrates that undue leniency may arise from an inadequate public-protection structure even where the immediate term of imprisonment does not itself cross the high threshold for appellate intervention.

4. Totality

Because the sentences for the offensive weapon and additional arson offences were concurrent, the lead sentence needed to reflect the criminality of the incident as a whole. The principle of totality requires an overall sentence that is proportionate to all the offending, rather than treating each concurrent offence as having no practical effect.

Precedents Cited

R v Burinskas [2014] EWCA Crim 334

This authority established that a finding of dangerousness does not automatically restrict the court to life imprisonment or an extended sentence. Where life imprisonment is unjustified, an extended sentence will usually—but not invariably—be appropriate. A determinate sentence remains available.

The Court of Appeal accepted that principle but distinguished its practical application. The offender’s conduct and risk profile made this one of the cases in which an extended sentence was necessary. R v Burinskas preserved judicial discretion; it did not justify a determinate sentence where that sentence would inadequately protect the public.

R v Solomon [2022] EWCA Crim 1333

This case restated the demanding test governing references under section 36 of the Criminal Justice Act 1988. Appellate intervention is reserved for substantial departures from proper sentencing norms. A sentence must be not merely lenient, but unduly lenient.

Applying that threshold, the court declined to treat the custodial term alone as unduly lenient. The threshold was nevertheless crossed because the failure to impose an extended sentence left the identified public risk insufficiently managed.

Attorney General's Reference No.132 [2001] and R v Johnson [2002] EWCA Crim 1418, [2003] 1 Crim App R (S) 41

These authorities explain that the reference jurisdiction is intended to correct gross sentencing error, address legitimate public concern and preserve confidence where a sentence substantially departs from generally applied norms. They supported the restrained approach adopted in R v Solomon and in the present case.

Complex Concepts Simplified

Unduly lenient sentence

A sentence that is not simply generous, but falls substantially outside the range properly available to the sentencing judge.

Dangerous offender

An offender assessed as posing a significant risk of causing serious harm through further specified offences.

Extended sentence

A sentence combining a custodial term with an additional period of licence designed to protect the public after release.

Totality

The requirement that the overall sentence fairly reflects all the offences while remaining proportionate.

Category 2A

A guideline classification combining the court’s assessment of culpability and harm. Placement in a category does not prevent adjustment where the risk or aggravating features are unusually serious.

Impact

The judgment reinforces that sentencing courts must distinguish clearly between three questions: whether the offender is dangerous, whether a life sentence is justified and, if not, whether an extended sentence is necessary. Ambiguous treatment of those questions may expose a sentence to appellate correction.

It also confirms that actual injury is not the sole measure of seriousness in fire-setting cases. Where catastrophic harm is avoided only by chance, the risk itself may justify substantial sentencing consequences.

More broadly, the decision shows that a sentence can be unduly lenient because of its licence and public-protection provisions, even though its custodial component would not independently warrant intervention.

Conclusion

R v Tye [2026] EWCA Crim 1179 confirms that a determinate sentence remains theoretically available after a finding of dangerousness, but only where it adequately protects the public. When grave risk-taking is combined with poor insight, minimisation and a professional assessment of continuing serious risk, an extended sentence may be necessary. Failure to impose one can render the overall sentence unduly lenient even where the prison term itself remains within the permissible range.