I think it's intersting and does reflect some unique social change in the borough - for instance Lambeth and Lewisham (both next door) fair much worse. The Social change is that an area - the whole Southbank,Bermondsey Street and surround and borough - that were basically empty, abandoned wharfs 20-30 years ago is now chocker with very expensive flats/conversions and shops and restaurants and businesses. This regeneration has been unique to Southwark (in the south) as Lewisham has less nice riverside wharfs and Lambeth's Riverside is less extensive and mainly road. The south of Southwark has always been reasonably rich but the gentrificatin of SE22 for instance has also helped these figures, but they are after all just averages, the central bit of Southwark has some of the worse poverty in the country.