Date: Apr 17, 2026

Section 29 OAPA 1861: Harm Includes Foreseeable Risk When Using Corrosives in Public, Justifying Section 18 Guideline by Analogy and Extended Sentences

1) Introduction

In R v Newton [2026] EWCA Crim 519, the Court of Appeal (Criminal Division) (Dingemans LJ, Soole J, O’Farrell J) refused a renewed, non-counsel application for leave to appeal sentence arising from an offence of applying a corrosive fluid with intent, contrary to section 29 of the Offences against the Person Act 1861.

The applicant had pleaded guilty after squirting an ammonia-based substance at several men in a public house corridor leading to the men’s toilets. One complainant suffered eye and cheek burns requiring hospital flushing; numerous patrons were affected by fumes and distress, and the premises closed early. The Crown Court imposed an extended sentence for dangerousness.

The key issues were: (i) whether the Recorder was wrong to treat the injury as “grievous bodily harm” (as opposed to actual bodily harm) when selecting a harm category by analogy; (ii) whether the sentence was manifestly excessive; and (iii) whether the extended sentence was wrong in principle.

2) Summary of the Judgment

There is no definitive guideline for section 29 OAPA 1861; the court endorsed using the section 18 OAPA 1861 guideline by analogy, applied carefully and non-mechanistically.
Even where actual injury is relatively limited, harm assessment can properly include foreseeable and intended/potential harm, especially given the inherent risks of corrosive substances used in a public setting.
The Recorder’s selection of harm category 3 (the lowest in the section 18 guideline) alongside culpability A was within range and not erroneous.
The custodial term (54 months after guilty plea credit) was not excessive; the dangerousness finding and extended licence period were justified.
Leave to appeal sentence was refused.

3) Analysis

3.1 Precedents Cited

R v Ardic [2019] EWCA Crim 1836

The judgment treated R v Ardic [2019] EWCA Crim 1836 as authority supporting the approach of using the section 18 guideline as an analogous framework for section 29 corrosive-fluid offending. The Court of Appeal reiterated that analogy is legitimate where no guideline exists, provided the sentencing court adjusts for differences in offence elements and avoids a purely arithmetical transplant.

R v Adric and Others

The court relied on R v Adric and Others (as cited at [53] in the judgment) to confirm that the maximum sentence for section 29 and section 18 is the same: life imprisonment. That parity supported using the section 18 guideline as an appropriate comparator, as opposed to lower maxima (for example, section 47).

Attorney General's Reference (R v Rouf) [2022] EWCA Crim 63

Quoting Attorney General's Reference (R v Rouf) [2022] EWCA Crim 63 at [37], the court emphasised the distinctive and potentially irreversible harm of “acid or other potent corrosive substances” and the obvious risk of “irreversible and grave injury”. This supported treating corrosive attacks as inherently high-risk conduct, even where the outcome is (fortuitously) less severe.

3.2 Legal Reasoning

(a) No guideline for section 29: structured use of analogy

Applying the “overarching principles” of the General Guideline, the court approved the Recorder’s method: (i) identify the statutory maximum; (ii) consider Court of Appeal sentencing judgments; and (iii) apply a definitive guideline for an analogous offence. The court stressed that analogy must be approached carefully, with adjustments for differences in offence elements.

(b) Culpability and harm: why category 3A was not wrong

The Recorder treated the case as culpability A because a corrosive substance is a “highly dangerous weapon equivalent” and the applicant had brought it to the venue, indicating planning/premeditation (or at least preparedness to deploy it). The central appellate complaint was that the injury was too minor to qualify as “grievous bodily harm”, and therefore that the Recorder overstated harm.

The Court of Appeal’s answer was twofold:

Harm is not confined to injury actually caused. Under the General Guideline, harm includes harm intended and harm that might foreseeably have been caused. In a public-house setting with around 50 people present, spraying ammonia created an obvious and substantial risk to multiple victims.
Section 29’s structure makes potential harm especially significant. The court noted that, unlike section 18, section 29 does not require actual harm as an element. The offence is complete where the corrosive is applied with the requisite intent, “whether or not any injury is actually inflicted”. Accordingly, while courts must avoid “double counting” intended harm when borrowing the section 18 framework (because intent is built into section 18), potential harm remains a legitimate and important factor when assessing seriousness for section 29.

Against that backdrop, the Recorder’s use of harm category 3 (“all other cases” of really serious harm/wounding) was upheld as a “reasonable and appropriate reference”. The court also rejected the suggestion that the absence of a victim personal statement implied minimal harm. It treated the recorded injuries and the wider impact (direct victims plus distress and disruption to others) as materially relevant.

(c) Manifest excess and the extended sentence

Using the section 18 guideline by analogy, category 3A carries a starting point of 5 years custody (range 4–7). The Recorder’s pre-plea assessment (6 years) was then reduced by 25% guilty plea credit to 54 months. The Court of Appeal held this could not be described as excessive.

The court further noted there was no real dispute that the applicant’s history, the circumstances of the offence, and the pre-sentence report justified a finding of dangerousness and therefore the imposition of an extended sentence (custodial term plus an extended licence period) to protect the public from the risk of serious harm by further specified offences.

3.3 Impact

Practical sentencing route for section 29 cases: the decision reinforces that, absent a dedicated guideline, courts may adopt the section 18 guideline as the primary analogue for section 29 (supported by the shared life maximum), while applying it with careful adjustment.
Greater emphasis on public-risk corrosive attacks: even relatively limited physical injury may still justify a significant sentence because corrosives in crowded public venues create a high foreseeable risk of grave and lasting harm to multiple people.
Victim evidence is not determinative: the absence of a victim personal statement does not, without more, permit an inference of minimal harm where objective evidence shows injury and broader public distress.
Dangerousness remains central: where an offender’s history and assessed risk are high, the decision illustrates the Court of Appeal’s reluctance to interfere with extended sentences that are anchored in public protection.

4) Complex Concepts Simplified

Section 29 OAPA 1861 (applying corrosive fluid with intent): The prosecution must prove the defendant applied/threw a corrosive substance and intended to burn, maim, disfigure, disable, or inflict grievous bodily harm. Actual injury is not required.
Using an “analogous guideline”: When there is no sentencing guideline for an offence, courts may use a guideline for a similar offence as a structured aid, but must adjust for differences (including different legal elements and maxima) and avoid a mechanical copy-and-paste.
ABH vs GBH: Actual bodily harm (ABH) is more than “transient or trifling” harm. Grievous bodily harm (GBH) means “really serious” harm. In this case, even though the injury was limited, the court focused on the broader framework of harm (including foreseeable risk) when using category labels by analogy.
Double counting: A sentencing error where the same feature is used twice to increase sentence. Here, the court cautioned that when borrowing the section 18 guideline (which already includes intent), a court must not add extra weight simply because the offender intended harm—while still being entitled to consider the foreseeable/potential harm in a section 29 case.
Extended sentence / dangerousness: An extended sentence may be imposed where the offender is “dangerous” (poses a significant risk of serious harm from further specified offences). It combines a custodial term with an extended licence period to manage risk in the community after release.

5) Conclusion

[2026] EWCA Crim 519 confirms that for section 29 corrosive-fluid offences, sentencing courts may properly use the section 18 guideline by analogy and, crucially, may treat foreseeable and intended/potential harm—particularly in crowded public settings—as central to the harm assessment. The decision also underscores that limited actual injury, and the absence of a victim personal statement, will not necessarily reduce seriousness where the conduct created a high risk of grave harm, and that extended sentences will be upheld where dangerousness is well supported by the record and risk evidence.