Dr Doreen Boyd, a co-author, Rights Lab Associate Director, and Professor of Earth Observation at the University of Nottingham led the ESRC grant that supported this work. She said: "We have demonstrated how remote sensing data enables the identification and location of informal settlements of workers in potential situations of labour exploitation over a large geographic area (140km2). Identifying these settlements from the ground would require driving around the entire study area in search of possible settlements, which would be costly and ineffective, since many settlements are not visible from the road.