The woman arrested over the deaths of her three children at a house in southwest London has been charged with three counts of murder, Scotland Yard has said.

Tania Clarence was arrested yesterday on suspicion of murder after her three children were found dead.

Officers discovered the bodies after being called to the property in New Malden, south London, at around 9.30pm on Tuesday.

The children's father, Gary Clarence, was not at home at the time of the deaths.

The family, originally from South Africa, moved into the large semi-detached house in Thetford Road with their four children a year ago.

A neighbour said the three younger children, four-year-old twin boys and an older girl, were suffering from genetic disorders, believed to be life-limiting.

However, the eldest child, thought to be around seven or eight years old, was in good health.

Ms Clarence, 42, is to appear  at Wimbledon Magistrates' Court tomorrow, Scotland Yard said.