Case overview
Former EastEnders actress Sian Blake, 43, and her two young sons were reported missing in December 2015, but their bodies were not recovered until early January 2016, buried in the garden of the family home in southeast London. Her partner, Arthur Simpson-Kent, became the focus of the investigation after fleeing to Ghana days before the discovery. The case turned on investigative delays, conflicting accounts of the family’s last known movements, and questions about how long the victims had been deceased before anyone acted.
The victims and the household
Sian Blake had appeared in more than 50 episodes of the BBC soap opera “EastEnders” in the 1990s, playing the character Frankie Pierre. By 2015, she had been diagnosed with motor neurone disease, a progressive condition that was affecting her mobility and independence. She lived with her partner Arthur Simpson-Kent and their two sons, Zachary, 8, and Amon, 4, in Erith, Kent.
Blake had been receiving care and support from family members as her condition worsened. Her sister and other relatives were in regular contact with her in the weeks leading up to her disappearance.
The last confirmed contact
Sian Blake was last seen by a family member on December 13, 2015. She had been scheduled to visit relatives in Leyton, east London, with her children on December 16, but never arrived. Family members grew concerned when calls and messages went unanswered.
Arthur Simpson-Kent told relatives that Blake and the children had gone to visit friends in Cambridge. When pressed for details, he provided inconsistent information and became evasive. On December 16, Blake’s family reported her and the children missing to the Metropolitan Police.
Initial police response
Officers visited the family home in Erith multiple times in the days following the missing persons report. Simpson-Kent was interviewed and maintained that Blake had left with the children of her own accord. Police did not initially treat the case as high-risk, despite Blake’s medical condition and the fact that she had not taken essential medication with her.
On December 18, officers conducted a cursory search of the property but found no immediate evidence of foul play. Simpson-Kent remained at the residence and continued to communicate with investigators.
The suspect leaves the country
On December 19, 2015, Arthur Simpson-Kent traveled to Glasgow, Scotland, and then boarded a flight to Accra, Ghana. He left the UK while still considered a person of interest in the missing persons case, but before any charges had been filed or travel restrictions imposed.
His departure prompted a reassessment of the investigation. By late December, detectives began treating the case as a murder inquiry and obtained a warrant to conduct a more thorough search of the family home.
Discovery of the bodies
On January 5, 2016, forensic officers returned to the property in Erith and began excavating the rear garden. The bodies of Sian Blake and her two sons were found buried in shallow graves. All three had suffered significant head and neck injuries consistent with a sustained assault.
Pathologists later determined that the victims had likely been deceased since mid-December, meaning they had been buried in the garden for weeks while Simpson-Kent remained in the home and spoke with police.
International manhunt and extradition
Following the discovery, UK authorities issued an international arrest warrant for Arthur Simpson-Kent. Ghanaian police located him on January 9, 2016, at a beach resort in the village of Busua, in the country’s Western Region. He was taken into custody without incident.
Simpson-Kent initially contested extradition, but ultimately agreed to return to the UK. He was flown back to London on February 12, 2016, and formally charged with three counts of murder.
The prosecution case
Prosecutors presented evidence that Simpson-Kent had killed Blake and the children sometime between December 14 and December 15, 2015. Forensic analysis of the crime scene indicated that all three victims had been struck repeatedly with a blunt instrument, likely in the family home, before being moved to the garden.
Mobile phone records, financial transactions, and witness statements established that Simpson-Kent had been alone at the property during the period when the murders were believed to have occurred. He had used Blake’s phone to send text messages to family members in an apparent attempt to delay suspicion.
The prosecution also highlighted the timeline of police contact, noting that Simpson-Kent had been interviewed multiple times while the victims lay buried just meters from where officers stood.
Guilty plea and sentencing
Arthur Simpson-Kent entered guilty pleas to all three counts of murder on June 3, 2016, at the Old Bailey in London. He offered no explanation for the killings and made no statement during the hearing.
On June 10, 2016, he was sentenced to life imprisonment with a minimum term of 20 years before eligibility for parole. The judge described the murders as brutal and noted the vulnerability of the victims, particularly the two young children.
Questions about the police response
The case prompted an Independent Police Complaints Commission investigation into the Metropolitan Police’s handling of the initial missing persons report. Critics focused on the delay in treating the disappearance as high-risk, the limited scope of early searches, and the failure to prevent Simpson-Kent from leaving the country.
The IPCC report, published in 2017, found that while individual officers had not committed misconduct, there were systemic failures in risk assessment and information sharing. The report recommended changes to how cases involving vulnerable adults are prioritized and managed.
The investigative timeline under scrutiny
One of the most contested aspects of the case remains the three-week window between the likely date of the murders and the discovery of the bodies. During that period, Simpson-Kent remained free, spoke with investigators, and ultimately fled the country.
Family members of Sian Blake have questioned whether earlier intervention could have led to his arrest before he left the UK. The Metropolitan Police acknowledged delays but stated that the investigation was handled according to protocols in place at the time.
The case has been cited in training materials and policy reviews related to missing persons investigations, particularly those involving individuals with serious medical conditions.
Where to look next
- Documentary: “Murdered by My Boyfriend” (Investigation Discovery)
- Documentary: “EastEnders Murder: The Sian Blake Story” (Channel 5)
- Podcast: “True Crime All The Time” (Emash Digital)
