The global population is ageing rapidly, emphasising the need to understand the decision-making processes of older adults regarding potential care transitions. Gerontological research has focused on healthcare decisions, with less information on living situation choices of older adults. This review explored older adults’ experiences with their involvement in decision-making processes related to transitioning into care facilities in the United Kingdom. From a systematic search of articles, nine were reviewed using thematic narrative synthesis. Four themes with nine subthemes were identified: Involvement in decision-making (Exclusion of older adults, Usefulness of involvement), The necessity of moving (Triggers for moves, The role of family), Timely planning (Helpfulness of planning, Planning avoidance), and Factors for choosing a care home (Non-quality factors, Quality factors, Continuity of life). These themes highlighted the issue of inadequate involvement of older adults in decision-making, often resulting in negative consequences like regret and difficulty settling into new care settings. The necessity of moving arose from sudden events or increased support needs. Some older adults acknowledged the necessity due to declining health or to spare family burden, while relatives grappled emotionally, postponing the choice. Timely planning was found to be beneficial practically and emotionally, facilitating smoother transitions. However, participants would rarely plan and discuss such matters early. Older adults focused on personal experiences and trusted sources rather than publicly available information when considering Factors for choosing a care home. The findings show the need for greater inclusion of older adults in decisions related to their care and the importance of early planning and providing preferred types and formats of information to aid decisions. Future research should focus on a better understanding of older adults’ preferences for successful involvement in care decisions, with support and guidance for others involved in the decisions.