Lived in Fenwick for a couple of years, and I've lived nearby on both ED and Peckham side for a couple of years since and I've loved all of it. In all that time one incident. And I was crossing Goose Green alone at about 2am which might not have been the smartest move ever. Anyway I think it's pretty safe in general - try not to walk around quiet streets on your own late particularly on the weekends when everyone trundling home half cut from Lordship Lane make pretty easy targets. But even then you'd have to be pretty unlucky. Fenwick's great.