Since ED became gentrified, there are pockets of social deprivation, rather than a wholesale area of it. I'd say the poorest parts currently is the area around the East Dulwich Estate, the part of Lordship Lane surrounding the Grove and Dawson Heights which have social housing and privately owned one bedroom rents. As I say, pockets as there are expensive houses next to those areas. I remember parts of Crystal Palace Road near the surgery not being particularly middle class twenty years ago, but times have changed.