The chapter explores a reconceptualization of on-street sex work as a complex affective assemblages. Complex Affective Assemblage theory can be traced to Deleuze & Guattari's development of social assemblage theory most notably in 'A thousand Plateaus', but now extends into complexity theory, the affective turn in cultural studies, and new materialist philosophies, and is keenly associated with the (differing) assemblage theory of Massumi and Delanda. The chapter takes up the reconceptualization of on-street sex work in terms of this approach, and in particular draws upon an empirical study of the operation of Engagement and Support Orders in the complex affective assemblage of on-street sex work. The aim of this reconceptualization is to better address concerns of social justice for sex workers