GBH Sentencing Guidelines UK (Section 18 & Section 20)
Last reviewed: June 2026. General information about the law in England and Wales, not legal advice; sentencing depends on the facts and the current Sentencing Council guideline.
In short: “GBH” covers two very different offences. Section 20 (inflicting grievous bodily harm or unlawful wounding, without intent) carries a maximum of 5 years. Section 18 (causing GBH or wounding with intent to cause serious harm) is far graver and carries a maximum of life imprisonment, with typical custodial sentences ranging from around 3 to 16 years. The court grades the offence by culpability and harm under the Sentencing Council guideline; the presence of intent is what separates s18 from s20 and transforms the sentence.
The two GBH offences
| Offence | Intent? | Maximum | Typical custody range |
|---|---|---|---|
| Section 20 (GBH / unlawful wounding) | No specific intent | 5 years | Community order to around 4½ years |
| Section 18 (GBH with intent) | Intent to cause serious harm | Life | Around 3 to 16 years |
What counts as GBH
GBH means really serious harm — for example broken bones, wounds requiring surgery, permanent disability or disfigurement, or serious psychological injury. “Wounding” means breaking the skin. Whether a case is charged as s18 or s20 turns on the defendant’s state of mind: an intention to cause serious harm makes it s18.
How the sentence is decided
The court assesses culpability (use of a weapon, degree of intent, premeditation, whether the victim was vulnerable or an emergency worker) and harm (the seriousness and lasting effect of the injuries) to find a starting point and range, then adjusts for aggravating and mitigating factors and any guilty-plea credit. For the most serious s18 cases, dangerous-offender provisions (extended or life sentences) can apply.
Common misunderstandings
- Treating “GBH” as one offence — s18 (with intent) is vastly more serious than s20.
- Assuming s20 always means a long sentence — lower-level s20 can attract a community or suspended sentence.
- Underestimating s18 — it carries up to life imprisonment.
- Forgetting that intent is the key dividing line between the two offences.
Frequently asked questions
What is the maximum sentence for GBH?
Five years for section 20 (without intent); life imprisonment for section 18 (with intent).
What is the difference between section 18 and section 20?
Section 18 requires an intent to cause serious harm and is punished far more heavily; section 20 does not require that specific intent.
Will GBH always mean prison?
Section 18 almost always means a significant custodial sentence; lower-level section 20 can sometimes be a community or suspended sentence.
Related guides and official sources
See ABH sentencing, how sentencing works and prison sentences explained. Official: the Sentencing Council GBH guidelines.
