This paper reports on a study of prior and current experiences with English of non-local Asian international students and of their language expectations when commencing their studies at an English-medium university in Hong Kong. In addition to grappling with new academic demands, these sojourners need to adapt to a vastly different social environment, further complicating the already challenging school-to-university transition. A mixed-methods approach was adopted to generate data with the employment of online questionnaire surveys and semi-structured individual interviews. In total, 224 completed questionnaires were returned, among which 60 were identified as responses from Asian international students. Eleven students of five different Asian nationalities participated in interviews. The results show that despite different socio-cultural backgrounds and prior learning experiences, these international students had similar expectations regarding the institutional language environment of an internationalised university, within which they expect English to be not only a medium of instruction but also a "lingua franca" for social interaction with their peers and local counterparts. The findings provide internationalised institutions with insights into the needs and expectations of incoming students from regions which are geographical neighbours but with varying cultural norms, educational standards, colonial heritage, degrees of elitism, and technological development.