A MONSTER had admitted helping her convicted killer lover dismember a woman and scatter her remains in a park and by a river.
Severed body parts belonging to Mayhew, 38, were first discovered in Rowdown Fields, Croydon, on April 2 this year.
Her “limbless torso” was then pulled from the River Wandle by contractors carrying out cleaning work the following month.
Steven Sansom, 45, previously admitted murdering Sarah and perverting the course of justice.
His girlfriend Gemma Watts, 49, today pleaded guilty to the same charges.
Sarah was last seen alive in Sutton, South West London, on the evening of March 8.
The Old Bailey heard she was killed at Sansom’s home that night before the killer couple used power tools to dismember her body.
After cleaning up evidence of their gruesome crime, Sansom left a chilling voice note claiming the pair had “done the world a service”.
Sarah’s head, arms and legs were found in the park when a dog walking in the fields returned to its owner carrying a human bone.
Then, on May 21, further body parts were discovered in Mitcham.
The court heard Sarah’s head had been shaved and she had bruising on her skull.
Sansom was previously convicted of murder and was jailed for life with a minimum term of 20 years in 1999.
He stabbed popular cab driver Terrence Boyle, 59, in the throat and back before escaping with just £25 on Christmas Eve 1998.
Sansom was released from jail in December 2019.
The couple have been remanded into custody ahead of sentencing on a date to be set.
Detective Inspector Martin Thorpe earlier said: “My thoughts are with Sarah’s family as they deal with this heartbreaking news.
“No family should have to lose a loved one in such tragic circumstances, and we will continue to provide our support as our investigation progresses.”
Gemma Watts today pleaded guilty to murder[/caption]
Her boyfriend Steven Sansom previously admitted the same charge[/caption]
Sarah was murdered on March 8[/caption]
