Benjamin Scott is in prison serving a lengthy term for manslaughter and, most recently, a serious attack on a prison officer. Benjamin Scott, aged 46, was handed an additional 11-year extended sentence on 20 March 2026 after throwing boiling water into a prison officer’s face and beating him with a kettle at HMP Onley in Northamptonshire — an unprovoked attack described by police as one of the most violent assaults on prison staff they had encountered.

Who is Benjamin Scott?

Benjamin Scott, 46, is a convicted killer from Sheffield, South Yorkshire. He entered the criminal justice system in 2011 when he was convicted of manslaughter following a fatal stabbing in Sheffield. He was imprisoned for 15 years following that conviction and has spent much of the intervening period at various establishments within the UK prison estate, including HMP Onley in Northamptonshire, a Category C training prison near Rugby.

Scott came to wider attention in April 2026 following news coverage of a violent assault he carried out on a prison officer at HMP Onley, for which he received an additional extended custodial sentence at Northampton Crown Court. His case has sparked renewed debate about violence against prison staff and the mental health support available to long-term inmates.

What Was Benjamin Scott Originally Jailed For?

Scott was convicted of the manslaughter of a man in Sheffield in 2011 and received a 15-year prison sentence. The circumstances of that offence involved a fatal stabbing. He was not released at any point between that conviction and the HMP Onley attack, serving his sentence continuously within the closed prison estate.

Manslaughter in England and Wales carries a maximum sentence of life imprisonment, though the actual term served depends on the specific circumstances, the offender’s culpability, and any mitigating factors presented at sentencing. Scott’s 15-year term placed him firmly in the category of serious violent offenders who are managed under close supervision. You can learn more about how the UK categorises and manages such prisoners by visiting our guide to how the Parole Board works.

The HMP Onley Boiling Water Attack

The attack took place on 27 December 2024, at approximately 9:30am, at HMP Onley in Northamptonshire. In what was described by investigators as an entirely unprovoked incident, Scott approached an unsuspecting prison officer and threw boiling water directly into the left side of his face. He then struck the officer repeatedly over the head with a kettle.

The officer sustained second-degree burns to the left side of his face and an ocular burn to his left eye. The burns required months of specialist medical care and multiple procedures in a bid to save the officer’s sight. The injury was life-altering, and victim impact statements presented at sentencing described the profound effect the attack had on the officer’s ability to carry out normal daily activities.

Scott later told police the attack was not personal — he claimed he wanted to be transferred to a different prison because of concerns about his deteriorating mental health. Investigators found that claim did not reduce the seriousness of what had occurred. Detective Constable Jamie Yates of Northamptonshire Police described it as a particularly violent and unprovoked assault on a public servant who was simply doing their job.

Benjamin Scott’s Extended Sentence

At Northampton Crown Court on 20 March 2026, Scott pleaded guilty to one count of Section 18 grievous bodily harm with intent. He was handed an extended sentence comprising six years in custody and five years on licence — a total extended term of 11 years — to be served consecutively on top of his existing 15-year sentence.

Extended sentences are used in England and Wales when a court considers an offender to pose a significant risk of serious harm to the public or to staff, even after a standard custodial term would have expired. The licence component means Scott will remain under supervision and subject to recall even after his initial custodial term is served. For an overview of how extended sentences work, see our Parole Board guide.

The sentencing judge noted the severity of the injuries inflicted, the position of the victim as a public servant carrying out his duties, and Scott’s existing record of serious violence in determining the length of the extended sentence.

Prison Officer Safety in the UK

Attacks on prison staff in England and Wales have been a persistent and growing concern for the Prison Officers’ Association (POA) and for successive governments. Official data shows that assaults on prison staff — including those involving weapons and improvised items such as boiling water and cleaning products — run into the thousands each year across the prison estate.

HMP Onley, where the attack took place, is a Category C resettlement and training prison near Rugby, Northamptonshire. It holds adult male prisoners and, like all Category C establishments, requires staff to manage a population of inmates who may have lengthy records of serious offending. Families wishing to support a loved one held at HMP Onley can find visiting information on our book a prison visit page. Information about how inmates can receive support, including sending money to a prisoner, is also available on the site.

Frequently Asked Questions

Why is Benjamin Scott in prison?

Benjamin Scott is in prison serving two consecutive sentences. He was originally jailed for 15 years following a manslaughter conviction in Sheffield in 2011. He then received an additional 11-year extended sentence in March 2026 after pleading guilty to grievous bodily harm with intent, having thrown boiling water at a prison officer and struck him with a kettle at HMP Onley in December 2024.

What did Benjamin Scott do to the prison officer?

On 27 December 2024, Scott threw boiling water into the face of a prison officer at HMP Onley, causing second-degree burns. He then struck the officer repeatedly over the head with a kettle. The officer suffered an ocular burn to his left eye and required months of specialist medical treatment in an attempt to preserve his sight.

What sentence did Benjamin Scott receive for the HMP Onley attack?

At Northampton Crown Court on 20 March 2026, Scott was given an extended sentence of 11 years — comprising six years in custody and five years on licence — to be served on top of his existing prison term. The sentence was for one count of Section 18 grievous bodily harm with intent.

Where is Benjamin Scott currently held?

As of 2026, the specific prison holding Benjamin Scott has not been publicly confirmed by the Prison Service following his sentencing at Northampton Crown Court. Prisoners can be transferred between establishments at any time, and their precise location is not routinely disclosed to the public for security reasons.

Why did Benjamin Scott attack the prison officer?

Scott told police the attack was not personal and that he wanted to be moved to a different prison because of concerns about his mental health. Investigators found no evidence that he had made formal requests for a transfer through legitimate channels before carrying out the assault. The judge and police rejected the suggestion that his stated motivation reduced the seriousness of the offence.