Casepin
Back to cases

Case file

Murder of Michael Gilbert

SOLVED2000Blue Lagoon, Arlesey, England3 SOURCESUPDATED JUL 2026
Illustrative

Michael Gilbert was born in 1982 into an unstable home and spent parts of his childhood in care, moving frequently with his family. As a child he was reportedly the subject of unresolved sexual assault allegations, was bullied at school and in children's homes, and underwent a mastectomy at age 13. In 1998, while living in a children's home, he met James Watt. By 2000 Gilbert had accumulated criminal convictions and cautions and had spent time in custody; Watt was also known to police.

After leaving the children's home, Gilbert continued to associate with Watt and moved in and out of various homes belonging to the Watt family in Luton until his death. While living with the family he was reportedly beaten, tortured, and forced to work as a slave, with his benefit money taken from him. Abuse — some of it recorded on video — reportedly included stabbing, being hit with a baseball bat, being shot at with an air pistol, being forced to drink his own urine, and being forced to stand in boiling water. He was reportedly also chained to his bed at night to prevent escape, and when he did escape the family allegedly used his National Insurance number to trace his benefit claims and bring him back. Gilbert's sister, who was in a relationship with James Watt, lived with him during part of the abuse period and later told the court she had witnessed attacks on Gilbert and had herself suffered violence. A subsequent safeguarding report described the Watt family as having a reputation for violence and criminality, noting the police had visited the family address 112 times by 2001.

On 10 May 2009, Gilbert's decapitated body, with other body parts missing, was found in the Blue Lagoon in Arlesey; the head and remaining parts were not recovered until February 2010. Detectives believed he died overnight between 21 and 22 January 2009. A pathologist found a cut aorta, stab wounds to the chest, and internal injuries, but could not determine a precise cause of death.

A trial began in February 2010. In April 2010, James Watt, his girlfriend Natasha Oldfield, and Nichola Roberts (girlfriend of James's brother Richard Watt) were convicted of murder. Richard Watt, Robert Watt (James's brother), and their mother, Jennifer Smith-Dennis, were convicted of familial homicide. All six were also convicted of perverting the course of justice. Antonio Watt, father of the Watt brothers, was acquitted of familial homicide and perverting the course of justice. Sentences ranged from 6 to 36 years. In May 2011, Richard Watt's sentence was reduced to four years on appeal in recognition of his assistance in convicting the others and locating body parts; other appeals were rejected.

Following Gilbert's death, the Luton Safeguarding Vulnerable Adults Board and the Independent Police Complaints Commission published reports in 2011 identifying failings by police, social workers, and medical professionals involved in his case, and made recommendations for improvement.

Key facts

Victims
Michael Gilbert
Date
2000
Location
Blue Lagoon, Arlesey, England
Case status
solved

Case timeline

  1. 1982

    Michael Gilbert is born.

  2. 1993

    Gilbert's sister accuses him of sexual assault; the investigation is inconclusive.

  3. 1997

    Gilbert's mother reports to police that Gilbert had sexually assaulted a boy.

  4. 1998

    Gilbert meets James Watt while both are living in a children's home.

  5. 2000

    By this year, Gilbert has several criminal convictions and cautions and has spent time in custody.

  6. 2001

    By this year, police had visited the Watt family address 112 times.

  7. 2009-01

    Detectives believe Gilbert died overnight between 21 and 22 January 2009.

  8. 2009-05-10

    Gilbert's decapitated body is found in the Blue Lagoon in Arlesey.

  9. 2010-02

    The head and remaining missing body parts are found.

  10. 2010-02

    Trial into Gilbert's murder begins.

  11. 2010-04

    James Watt, Natasha Oldfield and Nichola Roberts are convicted of murder; Richard Watt, Robert Watt and Jennifer Smith-Dennis are convicted of familial homicide; Antonio Watt is acquitted; all six convicted are also found guilty of perverting the course of justice.

  12. 2011-05

    Richard Watt's sentence is reduced to four years on appeal; appeals by Watt, Oldfield and Roberts are rejected.

  13. 2011

    Luton Safeguarding Vulnerable Adults Board publishes a Serious Case Review; Independent Police Complaints Commission publishes its own report into police handling of the case.

Best coverage

No approved coverage links are attached yet.

People

  • Richard Watt

    CONVICTED

    Convicted of familial homicide and perverting the course of justice; originally sentenced to 6 years, reduced to 4 on appeal in 2011 after assisting authorities.

  • Nichola Roberts

    CONVICTED

    Girlfriend of Richard Watt; convicted of murder and perverting the course of justice; sentenced to 15 years.

  • James Watt

    CONVICTED

    Convicted of murder and perverting the course of justice; described as the ringleader; sentenced to 36 years.

  • Jennifer Smith-Dennis

    CONVICTED

    Mother of James and Richard Watt; convicted of familial homicide and perverting the course of justice; sentenced to 10 years.

  • Michael Gilbert

    VICTIM

    Vulnerable man kept as a slave and abused by the Watt family for years before being murdered in January 2009.

  • Robert Watt

    CONVICTED

    James Watt's brother; convicted of familial homicide and perverting the course of justice; sentenced to 8 years.

  • Antonio Watt

    ACQUITTED

    Father of James and Richard Watt; acquitted of familial homicide and perverting the course of justice.

  • Natasha Oldfield

    CONVICTED

    James Watt's girlfriend; convicted of murder and perverting the course of justice; sentenced to 18 years.

Roles reflect public records and court outcomes at the time of writing — supporting citations are on file under Sources.

Places

Blue Lagoon, Arlesey, England

52.0167, -0.2667

View on the map

Common questions

What happened to the victim?
Michael Gilbert, a vulnerable man from Luton, was kept as a slave and tortured for years by the Watt family before being murdered in January 2009; six family members were convicted in 2010 in connection with his death.
Where did the murder happen?
Blue Lagoon, Arlesey, England.
Who was convicted?
Richard Watt (Convicted of familial homicide and perverting the course of justice; originally sentenced to 6 years, reduced to 4 on appeal in 2011 after assisting authorities.), Nichola Roberts (Girlfriend of Richard Watt; convicted of murder and perverting the course of justice; sentenced to 15 years.), James Watt (Convicted of murder and perverting the course of justice; described as the ringleader; sentenced to 36 years.), Jennifer Smith-Dennis (Mother of James and Richard Watt; convicted of familial homicide and perverting the course of justice; sentenced to 10 years.), Robert Watt (James Watt's brother; convicted of familial homicide and perverting the course of justice; sentenced to 8 years.), and Natasha Oldfield (James Watt's girlfriend; convicted of murder and perverting the course of justice; sentenced to 18 years.).
What is the current status of the case?
Status: solved.
More cases in England

Sources

  1. Murder of Michael Gilbertwikipedia · Wikipedia · 2026-07-07
  2. Contemporaneous coverage — BBC Newsnews · BBC News · 2026-07-07
  3. Contemporaneous coverage — BBC Newsnews · BBC News · 2026-07-07