Police are appealing for information on two men seen running away from the scene of the shooting on Hindrey Road, towards the nearby Pembury Estate.
One is black, officers said, while the second is light-skinned, possibly of Asian or Turkish appearance.
Police said there was as yet no clear motive for the shootings, and no-one has been arrested.
"At this very early stage we must retain an open mind regarding the circumstances of the incident and any motive," the spokesman said.
More top news
Claire Ptak said she was thrilled to be chosen to bake the royal wedding cake of organic lemon elderflower.
The CofE is making portable card readers available to more than 16,000 churches.
Around 150 people had occupied Sofia House in Great Portland Street from the start of March.