Post-mortem examinations will take place today for the three children who were found dead at a property in New Malden. A 42-year-old woman arrested on suspicion of murder remains in police custody.
A neighbour has described three children who were found dead at a property in New Malden as "happy" and "lovely".
Joy Devis, 86 said news of the deaths was a "huge surprise and shock".
"Their children were super, lovely children. They were very happy, there was a very nice atmosphere there," the retired nurse said.
It has been reported that the three children suffered from life-limiting genetic conditions.
An elder child, thought to be around seven or eight years old, also living at the house, was in good health.
She said the parents, named locally as Tania and Gary Clarence, received help from a nanny and a maid.
Figures released this week show a sharp rise in the number of people living on London's streets.
Newly released emails to a Muslim campaign group reveal Mohammed Emwazi felt "controlled" under the watch of the security services.
Tributes have been left in Caledonian Road in Islington where 15-year-old Alan Cartwright died after he was stabbed.