Not all council estates are full of nasty bad people. There are some right villains living in 'nice respectable houses', but I get your concern. The houses look fine, so move, make friends with your neighbours and have a great life. There are a lot of good things happening in Peckham, great artists' communities, bars and fab architecture. Join The Peckham Society, go along to the Choumert Square Garden Party, make connections. Enjoy! If you need anything, remain a member of this group and post on it now and again!