In this chapter, we explain how LG came to have the social mix that it does. This requires that we document a number of policies, processes and trends. In doing so, we first provide a potted history of social housing in London, detailing where in the city it is concentrated, when it was built and by whom. Second, we describe the kind of sociopolitical context in which estates like LG were ... [Show full abstract] constructed. We then discuss the vexed issue of Right to Buy along with more recent market-led legislation on social housing, before taking stock of the cumulative effects of these policies for LG and other inner-city estates. Finally, in teasing out the characteristics of LG, we develop the notion of ‘select centro-margins’ (SCMs). This notion is important in later chapters when it comes to analysing the realities of ‘social mix’ on LG in relation to themes such as interclass and interethnic engagement, gentrification and (dis)order (among others).