There is one in Brixton owned by a sista called Kim Crawford. Its called Open Doors Estates, and is located on 91 Acre Lane, Brixton.
She was at a recent event organised by the National Black Womens Network.
Ther was a big feature interview on her in Knowledge Fountain Magazine.
The issue is here, read for yourself
http://www.knowledgefountain.co.uk/images/kfmag4.pdf
Ther is alos another I have seen in Peckham, and Crystal Palace.