This data collection consists of semi-structured interviews designed to cover processes in five domains of integration (social, cultural, structural, civic and political, identity) with sections on life before and after marriage. The data deposited consists of the transcripts of the recorded semi-structured interviews with British Pakistani Muslim and British Indian Sikh spouses, and migrant Pakistani Muslim and migrant Indian Sikh spouses. This research explored the relationships between marriage migration and integration, focusing on the two largest UK ethnic groups involved in transnational marriages with partners from their parents’ or grandparents’ countries of origin: British Pakistani Muslims and British Indian Sikhs.