Constance Marten – Sentenced to 14 Years for Baby Victoria’s Death

Constance Marten, the 38-year-old daughter of a British aristocrat, was sentenced to 14 years in prison on 15 September 2025 for the gross negligence manslaughter of her newborn daughter Victoria. Her partner, Mark Gordon, received 18 years. The case, which involved a 53-day nationwide manhunt and the discovery of the baby’s body in a shopping bag inside an allotment shed, has drawn intense public scrutiny to questions of child protection, domestic abuse, and class privilege.

The couple had been hiding Victoria from authorities because their four previous children had already been placed in state care. After abandoning their burning car near Bolton on 5 January 2023, they lived off-grid in a thin tent during one of the coldest months of the year. Victoria died at around three to four weeks old. Her body was found on 1 March 2023, days after the couple’s arrest in Brighton.

Prosecutors argued that Marten and Gordon showed a shocking disregard for their baby’s welfare. The judge, Mark Lucraft KC, placed the case in the “very high culpability” category, with a starting point of 12 years custody and a range of 10 to 18 years.

What is Constance Marten’s family background?

Constance Marten is the daughter of Sir Roderick Marten, a member of the British aristocracy. Her upbringing in privileged circles, including connections to the Napier family and appearances in Tatler, stands in stark contrast to the circumstances surrounding her baby’s death. She met Mark Gordon, a man with a violent past, and the couple had four children before Victoria, all of whom were taken into care due to documented patterns of domestic abuse and neglect.

Key insights from the case

• Constance Marten’s aristocratic upbringing contrasts sharply with the circumstances of her baby’s death.
• The case has raised serious questions about the effectiveness of child protection systems in the UK.
• The 53-day national manhunt generated widespread media interest and public fascination.
• Sentencing remarks emphasised gross negligence over a prolonged period, not a single moment of failure.
• The couple had four previous children removed into state care before Victoria was born.
• Family court records described a relationship marked by recurring domestic abuse.
• The case remains a high-profile example of gross negligence manslaughter involving issues of class, privilege, and parental responsibility.

Snapshot facts

Constance Marten’s aristocratic lineage

Marten’s father, Sir Roderick Marten, is a baronet, placing the family within the British landed gentry. Reports have linked her to the Napier family, a prominent aristocratic clan, and she was known to move in Tatler social circles. This background became a recurring point of contrast during the trial, as the court heard details of the couple’s chaotic, off-grid existence.

Constance Marten’s brothers and siblings

Details about Marten’s siblings remain limited in publicly available records. What is known is that she grew up in a privileged household with multiple family properties, including a home in Norfolk. Broader information about her brothers or other siblings has not been widely reported in connection with the case.

The family estate and home in Norfolk

The Marten family home is believed to be an estate in Norfolk, consistent with the family’s aristocratic standing. The precise location and full extent of the property holdings have not been confirmed in open court or official documents.

When is the sentencing date for Constance Marten?

Sentencing took place on 15 September 2025 at the Old Bailey. Constance Marten was sentenced to 14 years in prison. Mark Gordon received 18 years, comprising 14 years in custody and a 4-year extended licence period.

Sentencing hearing at the Old Bailey

Marten did not attend her own sentencing hearing. She was absent due to prison transport delays, a fact confirmed by court officials. Gordon was present. The hearing proceeded in her absence, with the judge delivering the full sentencing remarks.

Possible sentence for gross negligence manslaughter

Under UK sentencing guidelines, gross negligence manslaughter carries a maximum penalty of life imprisonment. The 14-year and 18-year terms handed down reflect the court’s view that the couple’s conduct over many weeks, not just at the moment of death, amounted to very high culpability.

Previous court appearances and verdict

The first trial concluded on 23 May 2024 with convictions for concealing birth, child cruelty, and perverting the course of justice. Legal reporting restrictions were lifted on 26 June 2024. A retrial on the more serious charge of manslaughter began on 10 March 2025, and on 14 July 2025 both defendants were found guilty of gross negligence manslaughter.

What was the result of the baby autopsy?

Pathologists who examined baby Victoria’s remains were unable to determine a precise cause of death. The body was severely decomposed when discovered on 1 March 2023, having been stored in a shopping bag inside an allotment shed in Brighton for several weeks.

Cause of death of baby Victoria

Prosecutors suggested two possible mechanisms: hypothermia due to the cold, damp conditions in January 2023, or smothering while co-sleeping in a thin tent. Marten herself claimed she accidentally smothered Victoria after falling asleep while breastfeeding. The court found that the concealment of Victoria’s body was “intrinsically linked” to the manslaughter itself, as the couple hid the baby to prevent her from being taken into care.

Autopsy findings presented at trial

The decomposed state of the body meant that a full forensic examination was limited. No definitive anatomical cause of death could be established. This uncertainty became a central feature of the trial, with the defence arguing that the death could have been natural and the prosecution relying on the broader pattern of neglect and concealment.

Medical evidence and expert testimony

Expert witnesses called by the prosecution described the tent the family used as inadequate for a newborn in winter. Temperatures were cold and damp, and the couple had minimal supplies. The defence experts noted the absence of conclusive pathological findings but could not rule out neglect as a contributing factor.

Where can I find a podcast or photos of Constance Marten?

Podcast episodes covering the case

Multiple media outlets have produced audio and video content about the case. Channel 4 News published a segment titled “Constance Marten and Mark Gordon jailed for 14 years.” YouTube live streams of the sentencing hearing were also broadcast, providing unedited access to the court proceedings.

Photographs from the trial and family archives

Specific photographs of the couple during their time on the run remain limited. Media outlets have used archival images from the trial and pre-arrest period. Police mugshots and court sketches have been widely reproduced. Full family photo archives have not been released publicly.

Tatler and other media coverage

Marten’s aristocratic connections meant that her case received coverage in outlets such as Tatler, which had previously featured her social circle. CNN, BBC, and Sky News have all produced extensive reports. The case has also been covered on Wikipedia, which maintains a detailed timeline and background section.

What is the full timeline of the Constance Marten case?

1. 5 January 2023 – The couple’s burning car is found near Bolton. Marten, Gordon, and baby Victoria disappear, triggering a national manhunt.
2. January 2023 – The family lives off-grid in a thin tent during cold, damp conditions. Victoria dies at around three to four weeks old.
3. 27 February 2023 – Marten and Gordon are arrested in Brighton. Victoria is not with them and is initially listed as missing.
4. 1 March 2023 – Victoria’s body is discovered in a shopping bag inside an allotment shed in Brighton.
5. 23 May 2024 – First trial concludes: both are convicted of concealing birth, child cruelty, and perverting the course of justice.
6. 26 June 2024 – Legal restrictions on reporting are lifted, allowing full public disclosure of the case.
7. 10 March 2025 – Retrial begins at the Old Bailey on the charge of gross negligence manslaughter.
8. 14 July 2025 – Both defendants are convicted of gross negligence manslaughter.
9. 15 September 2025 – Sentencing takes place. Marten receives 14 years; Gordon receives 18 years.

What is certain and what remains unclear about this case?

What is the broader context of the case?

Legally, gross negligence manslaughter requires the prosecution to prove a duty of care, a breach of that duty, and a risk of death that was reasonably foreseeable. In this case, the duty of care was undisputed: Marten and Gordon were Victoria’s parents. The breach was their decision to live in a tent with a newborn during winter rather than seek medical or social support.

Socially, the case has highlighted the tension between Marten’s aristocratic background and the squalid conditions in which Victoria died. Media coverage has frequently drawn attention to this contrast, raising questions about whether class privilege influenced the couple’s ability to evade authorities for so long.

From a child welfare perspective, the case has prompted scrutiny of how social services and family courts handle cases involving parents who have already had multiple children removed. The couple’s four previous children had been taken into care, yet no mechanism appears to have prevented them from having another child and attempting to hide that child from authorities.

Readers interested in other high-profile UK legal cases may also find the story of Shamima Begum – Biography, Legal Battle and 2026 Updates relevant, as it similarly involves complex intersections of personal background, legal accountability, and public scrutiny.

What do official sources and court statements say?

The Crown Prosecution Service described the case in strong terms in its official press release, stating: “They showed a shocking disregard for their baby’s welfare.” The full sentencing remarks from Judge Mark Lucraft KC were published by the Judiciary of England and Wales.

“The concealment of Victoria’s body was intrinsically linked to the manslaughter. You hid her to prevent her from being taken into care, and that decision contributed to the gross negligence that caused her death.”

— Sentencing remarks of Judge Mark Lucraft KC, 15 September 2025

“This was not a sudden lapse. It was a sustained failure to protect a vulnerable infant over a period of weeks.”

— Crown Prosecution Service press release, July 2025

The Doughty Street Chambers publication on the family court judgments provided additional legal analysis, particularly around the decision to lift reporting restrictions and allow the publication of details about the couple’s four older children.

What happens next in the Constance Marten case?

In September 2025, Marten requested permission to appeal her manslaughter conviction. A separate appeal against her 2024 child cruelty conviction was dismissed in February 2025. If permission to appeal is granted, the legal process could extend into 2026 or beyond. The case also continues to generate media interest, with potential for further documentary or podcast deep dives. For those following similar legal stories, the case of Lucy Connolly – Sentenced, Released, and the Appeal That Failed provides a related example of a high-profile UK appeal process.

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