In both policy and academic debates in Britain, as elsewhere in Europe, concern is increasingly expressed over the implications of spousal immigration for ‘integration’. Continued practices of ‘homeland’ transnational marriage within some ethnic minority communities, in particular, are presented as problematic, and new immigration restrictions likely to particularly affect such groups are justified on the grounds of promoting integration. The evidence base to underpin this concern is, however, surprisingly limited and analysis is based on differing and often partial conceptualisations of integration. Through an examination of the evidence in recent studies, we interrogate the impact which spousal immigration can have within differing domains of integration. Exposing the complex processes at play we demonstrate the need for future research to deploy a nuanced, more comprehensive concept of integration if it is to avoid simplistic assertions that these forms of marriage migration have a single, direct impact on integration processes.