The crucial role of social integration for the academic success of home students is a common theme in pedagogical research, but for international students the emphasis has been much more on cultural factors and the challenges of transition. The findings of the International Students' Experience Project at the University of the Arts, London suggest that this is far from the whole story. International students come to the UK precisely to make cosmopolitan friendships, but are held back--by language and communication, but also, less obviously, by differences in age, qualifications, experience and expectations, and by the need to adapt rapidly to an environment which is new in every sense. While home students surmount the challenges of social integration with relative ease, international students thus need more support. By coming to understand the needs of these students in all their complexity, institutions can play a key role in facilitating integration.