Introducing the special issue, this paper provides a state-of-the-art on established and new trends in the study of international retirement migration (IRM) and summarises the five papers that follow. Early studies on IRM were mainly within Europe and drew on the conceptual framework of lifestyle migration, with some reference to the transnational and mobilities paradigms. New frontiers in IRM are presented under three heads. Firstly, new geographical frontiers extend IRM to new destinations within and proximate to Europe, and to new locations in the global South such as Thailand and Ecuador. Secondly, new typological frontiers involve a broadening of the class and wealth backgrounds of the retirees, including the ‘return of retirement’ of labour migrants to their countries of origin, and attentiveness to IRM's gendered aspects. Thirdly, new conceptual and theoretical frontiers of IRM involve a more in-depth investigation of its transnational aspects, exploration of the various regimes of mobility and, most importantly, a political economy perspective which stresses global inequalities and histories of colonialism in shaping access to privileged lifestyles. In the final part of the paper, the original features of each paper in the special issue are highlighted, demonstrating how they are collectively integrated and contribute to the advancement of IRM research.

Recent years have seen a growth in research on retirement/lifestyle migration to Spain, however this has tended to focus on the reasons for moving, as well as the lifestyles adopted as part of a healthy and active retirement. However, ageing in Spain can bring challenges as a person's resources for independent living diminish. This paper draws on narrative interviews with vulnerable older British people in Spain, focusing on those who have encountered a severe decline in health, are frail and in need of care. It looks at the formal and informal networks and agencies that support these individuals, in particular the resources and strategies they employ to access care. Drawing on a framework of care provision developed by Glucksmann and Lyons, four broad modes of provision for old age care used by older British people in Spain are identified: state/public, family/community, voluntary/not-for-profit and market/for-profit. The paper argues that there are language, cultural, spatial and financial barriers when accessing care in Spain as an older British citizen. It is concluded that there are some frail, vulnerable people that may fall through a support gap, whereby they are no longer the responsibility of UK welfare services, yet not fully recognised in their new country of residence, and asks if more should be done to support this population.

Volunteering is a ubiquitous and distinct feature of the British retired community in Spain, and for many older migrants volunteering constitutes a significant part of their post-retirement life abroad. Especially in the management and organisation of health and age-related problems voluntary organisations have come to play a crucial role not only for the British community but also for the Spanish host society and public health-care system. Furthermore, volunteering represents a valuable sphere of activity offering personal benefits for those who are actively engaged. Based on ethnographic fieldwork conducted in a charity organisation in the province of Alicante on the northern Costa Blanca, this paper examines the extensive functions that volunteering and charitable activities can offer British older migrants. The implementation of voluntary work within the specific context of retirement migration is identified as a multi-functional individual and societal resource. Volunteering for the retirees is described as a true means of adaptation to a new life context, and as a highly reflexive strategy of risk minimisation and self-realisation. This implies individual benefits and opens up possibilities of active ageing. Finally, volunteering will be analysed as a performative expression of transmigrants' cultural bifocality, reflecting both a high level of commitment to Spain as well as a specific feature of British community spirit and traditionalism.