This paper explores the cross-cultural organisational adaptation of host religious organisations through their interaction with non-Christian Chinese international students in the UK. Grounded in Kim's integrative adaptation theory, the research employed the methods of participant observation, interviews and document analysis to examine the interaction of international students with two specific churches (part of the Church of Scotland). The study found that in order to provide international engagement, the churches in question underwent cross-cultural organisational adaptation and transformation with a consideration of the cultural differences and the needs of Chinese students in intercultural communication, including in terms of multicultural team building, the improvement of intercultural competence and adaptive religious practices. These adaptive transformations or 'customised services' attracted and engaged large numbers of Chinese students in the intercultural interaction surrounding congregations. The cultural adaptation of host congregations contributes to the quality of social support for international students as well as the intercultural expansion of Christian values and beliefs throughout the trend of student mobility.