Some interesting reference material has come to me after watching Children of Men (2006). Particularly the end couple of scenes in which Theo takes the girl to Bexhill Refugee Camp.
This film has remarkable direction shown through its use of cinematography, mise en scene and composition. It portrays the type of atmosphere I want to bring to the slums of the trainyard district. It brings the elements of a 3rd world country to a place we can recognise and familiarise with which is exactly the effect I want to create.