The project explores the possible impacts of digital transformation on journeys to work through the development of a city-level digital twin (CDT) prototype that integrates data, models and insights from multiple disciplines and sectors. The research includes three work packages, 1) empirical investigation of key factors affecting worker’s choice on place of work (e.g. fixed workplace, work at/from home) and on travel mode in the Cambridge sub-region; 2) developing a digital twin prototype including a web-based interface for simulating journeys to work and testing two digital transformation scenarios (prevalence of teleworking, future charging demand of electric vehicles); 3) engaging with local authorities, modelling experts and other key stakeholders to collect feedback on the application and future development of CDT. The CDT prototype is co-developed with local authorities, through which a productive partnership has been established. The project also collaborates with academics across Cambridge and at UCL. Key research outputs are discussed in the report and a series of working propositions are proposed, which may guide the future research on CDT.