Our 21st century lives will be increasingly connected to our digital identities, representations of ourselves that are defined from trails of personal data and that connect us to commercial and public services, employers, schools, families and friends. The future health of our Digital Economy rests on training a new generation of leaders who can harness the emerging technologies of digital identity for both economic and societal value, but in a fair and transparent manner that accommodates growing public concern over the use of personal data. We will therefore train a community of 80 PhD students with the interdisciplinary skills needed to address the profound challenges of digital identity in the 21st century. Our training programme will equip students with a unique blend of interdisciplinary skills and knowledge across three thematic aspects of digital identity - enabling technologies, global impacts and people and society - while also providing them with the wider research and professional skills to deliver a research project across the intersection of at least two of these. Our students will be situated within Horizon, a leading centre for Digital Economy research and a vibrant environment that draws together a national research Hub, CDT and a network of over 100 industry, academic and international partners. Horizon currently provides access to a large network of over 75 potential supervisors, ranging from from leading Professors to talented early career researchers. Each student will work with an industry, public, third sector or international partner to ensure that their research is grounded in real user needs, to maximise its impact, and also to enhance their employability. These external partners will be involved in co-sponsorship, supervision, providing resources and hosting internships. Our external partners have already committed to co-sponsor 30 students so far, and we expect this number to grow. Our centre also has a strong international perspective, working with international partners to explore the global marketplace for digital identity services as well as the cross-cultural issues that this raises. This will build on our success in exporting the CDT model to China where we have recently established a £17M International Doctoral Innovation Centre to train 50 international students in digital economy research with funding from Chinese partners. We run an integrated four-year training programme that features a bespoke core covering key topics in digital identity, optional advanced specialist modules, practice-led team and individual projects, training in research methods and professional skills, public and external engagement, and cohort building activities including an annual writing retreat and summer school. The first year features a nine month structured process of PhD co-creation in which students, supervisors and external partners iteratively refine an initial PhD topic into a focused research proposal. Building on our experience of running the current Horizon CDT over the past five years, our management structure responds to external, university and student input and manages students through seven key stages of an extended PhD process: recruitment, induction, taught programme, PhD co-creation, PhD research, thesis, and alumni. Students will be recruited onto and managed through three distinct pathways - industry, international and institutional - that reflect the funding, supervision and visiting constraints of working with varied external partners.

Horizon is a multidisciplinary centre for Digital Economy (DE) research and impact. We balance the development of new technologies to capture and analyse human data, with explorations of how these can be used to deliver powerful experiences to people, with an awareness and understanding of the human and social values that must underpin these. We follow a user-centred approach, undertaking research in the wild based on principles of open innovation. In its first phase, Horizon has established a core team of over 50 researchers and has reached out to build a wider network of 35 academic and 200 industry, public and third-sector partners. We have established a Centre for Doctoral Training and inaugurated the DE All Hands series of conferences and national DE CDT Summer School. World-class scientific outputs in diverse disciplines have been balanced with economic, cultural and societal impact. This proposal builds on this critical mass to enable a step-change in Horizon's translational research and impact. We respond to the changing nature of the digital economy as it matures, as the social, physical and digital become blended and as human data becomes an increasingly valuable asset. We offer a vision in which human data enables the creation and delivery of highly personal experiences. We propose to address three major challenges. The first is to establish new technologies that collect and interpret our human data in a more transparent way. The second is to be able to better understand and design new kinds of experiences that employ these technologies to promote the values of personal fulfilment, wellbeing and sustainability. The third is to address key ethical challenges around design for privacy and new models of ownership. We will work closely with a range of external partners whose interests span: computing and analytics; social policy; and diverse sectors of the DE including creative industries, retail, fast moving consumer goods, finance, energy, transportation and healthcare. We will engage these through a programme of agile translational research projects. These will be integrated into an overarching strategic impact campaign that revolves around three flagships. In turn, these will be supported by two further programmes; one targeted at sustaining the wider DE community and the second at developing the capacity of our researchers to deliver translational research and impact.