"Police were called to Cornwall Close at around 1.12pm... to reports of a woman attacked by a dog," a force spokesperson said.
"The woman was treated by medics from London Ambulance Service, but sadly she was pronounced dead at the scene.
"Due to the threat posed, armed officers attended. After assessing the situation, officers were able to safely seize two dogs.
"These were registered XL bully dogs and prior to officers' arrival had been contained inside a room in the house. They did not leave the house at any time during the incident.
"The family of the woman, who was the owner of the dogs, are being supported by officers."
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London Ambulance Service sent crews, an incident response officer and a helicopter to the house.
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The government move to ban XL bullys followed a series of attacks on .
