Society, accessibility and mobility are in a state of flux, compounded by the global shock of COVID-19. The project Triple Access Planning for Uncertain Futures aims to advance guidance to improve the resilience and adaptability of sustainable urban mobility plans (SUMPs) in the face of uncertainty. Focus is upon the tripartite contribution to accessibility in our towns and cities of physical mobility, spatial proximity and digital connectivity. Existing urban mobility planning will be critically examined, and seven case study cities in five countries will be used to help achieve the project’s aims.