A woman has been found guilty of murdering her sister inside her Camden home in 2025, following a meticulous investigation by Met detectives.

Nancy Pexton, 70 (10.04.1956) was found guilty on Wednesday, 29 April at the Old Bailey, following a robust investigation which combined forensic, CCTV and digital enquiries to prove she had murdered her sister, Jennifer Abbott, also known as Sarah Steinberg.

She will be sentenced at the same court at a later date.

Detective Inspector Barry Hart, who led the investigation, said: “Our thoughts remain with Jennifer’s family and loved ones, and I hope today’s outcome provides them with some measure of comfort.

“Jennifer should have been able to feel safe in her own home. Instead, she was betrayed by someone she trusted, and the circumstances surrounding her death were profoundly unsettling.

“This case consisted of relentless investigative work, where we undertook extensive forensic, CCTV and digital enquiries to establish Pexton’s movements on the day of Jennifer’s murder.

“The determination of the investigation team has ensured that Pexton has been held fully accountable for her actions.”

The investigation

In the early evening of Friday, 13 June 2025, a family member attended Jennifer’s flat in Mornington Place, Camden, after repeated attempts to contact Jennifer went unanswered.

The flat door was locked and despite knocking repeatedly, there was no response from inside. With the help of a neighbour, they gained entry into the flat. Inside the living room, Jennifer was discovered lying on the floor with severe stab wounds to the neck.

Police and the London Ambulance Service attended, however Jennifer was sadly pronounced dead at the scene.

Detectives launched a murder investigation and focused on piecing together Jennifer’s final days.

Their enquiries revealed that Pexton was the last person known to have seen her sister alive, having visited the flat on Tuesday, 10 June. CCTV footage showed Pexton travelling to the address and leaving later that day, after which there were no further confirmed sightings of Jennifer.

As the investigation progressed, officers uncovered further evidence linking Pexton to the brutal murder and she was arrested on Tuesday, 18 June. When officers searched her belongings, they discovered a Rolex watch, which was a match to the one Jennifer was seen to be wearing in photos shared by her family with police.

Detectives were then able to confirm that it belonged to Jennifer and had gone missing after her death.

Alongside this, detectives uncovered significant forensic and digital evidence. Pexton’s DNA was identified on duct tape used to bind Jennifer’s mouth during the attack. In addition, analysis of Pexton’s phone found notes referring to plans to kill her sister. There was also a message from Jennifer where she expressed concerns that her sister was going to kill her.

Pexton, of Gloucester Place, Westminster denied responsibility but on 20 June 2025, she was charged with murder.