This paper explores and charts the reasons why some primary school headteachers in "disadvantaged" London schools remain in post at a time of rising rates of attrition of school leaders and headteachers. Instead of exploring the reasons why headteachers are quitting their posts in urban schools, this study examines the retention issue from an alternative perspective by understanding what factors encourage headteachers to stay. Findings suggest that the London headteachers are fueled by their commitment to principles of social justice and demonstrate this by providing stability and security for the children and staff in their schools.