This is the second edition of the Physics of Emergent Behaviour conference, following the very successful gathering in 2013. Once again, the aim is to have a highly multidisciplinary meeting, bringing together physicists, biologists, mathematicians and bio-engineers to discuss experimental and theoretical approaches for studying emergent behaviour in living systems. Speakers will combine an introduction aimed at a broad audience with results from their latest research. Topics covered will include search strategies and foraging, pattern formation and tissue self-organisation, sensing and migration, and decision-making. These topics span multiple scales from single cells and individuals to collectives.