Police were called to reports of a woman injured inside a house in Nutfield Close at 10.30 yesterday morning.
Officers have named her as 42-year-old Gemma Devonish and a post mortem will take place in due course.
A 38-year-old man was arrested early this morning on suspicion of murder.
Police say he and the victim were known to each other.
Detective Chief Inspector Alex Gammampila said: “Our thoughts today are with Gemma’s family and friends who are trying to come to terms with this truly tragic event. We are offering them all the support that we can.
“We know that the wider community will also be impacted and I would urge anyone with concerns to please speak with local officers.
“While we have made an arrest detectives continue to carry out a number of enquiries as we build a picture of the events that led to this horrific murder.
“I would ask anyone who was in the area of Nutfield Close who may have seen or heard anything suspicious, particularly on Wednesday 18 or morning of Thursday 19 December, to make contact.”
Chief Superintendent Andy Brittain, from the South Area Command Unit responsible for policing in Sutton said:
“I share the shock and concern that this terrible incident will have on the local community in Sutton. A team of specialist detectives is already making significant progress in this investigation and have swiftly arrested a man who is now in police custody.
“Local residents will see an increased number of officers in and around Nutfield Close while important investigative work is carried out. I want to thank residents for their patience while this continues and would urge anyone with concerns to speak to one of them so they can assist.”
Anyone with information is asked to call the incident room on 020 7175 2206 or via 101 quoting CAD 3012/19Dec.
To remain anonymous contact the independent charity Crimestoppers on 0800 555 111.
