The Geographic Information Science (GIScience) group carries out research in the core discipline of Geographic Information Science, focused on discovering and developing new theory, algorithms and tools for geospatial processing and management and enhancing the usability of systems and data. The work includes the development of new models, concepts and techniques for spatio-temporal data mining, 3D GIS, data quality assessment and metadata and data dissemination. In addition, the group explores the socio-technical aspects of GIScience through study of Human-Computer Interaction aspects of GIScience, behaviour of people movement in space and time, analysis of Volunteered Geographic Information, participatory mapping and citizen science. The GIScience group includes two sub-groups: spatial-temporal complexity (see http://standard.cege.ucl.ac.uk/) and the extreme citizen science group (see http://www.ucl.ac.uk/excites). We apply these concepts and tools to solve real-world problems which are intrinsically interdisciplinary covering engineering, anthropology, geography, crime science, transport, computer science, public health and environmental monitoring to name but a few. The GIScience group has secured over £5m in funding from Research Councils, EU FP7 and external collaboration over the past 5 years. Some significant research projects in the GIScience group include the EPSRC ‘Challenging Engineering’ award for the Extreme Citizen Science group, enabling communities, regardless of their literacy, to initiate, run and analyse scientific studies; EPSRC Project STANDARD - Spatio-Temporal Analysis of Network Data and Route Dynamics which focuses on the quantitative assessment of traffic congestion in central London; and the EU FP7 Project SECOA -Solutions for Environmental Contrasts in Coastal Areas which focuses on the evaluation of the impacts of urban development and climate change on coastal systems across Europe, Israel, India and Vietnam. The GIScience group has secured over £5m in funding from Research Councils, EU FP7 and external collaboration over the past 5 years. As a group, we partner with other universities and public, private and third-sector organisations. Recent collaborations with research institutes include the Chinese Academy of Science, Kings College London, University of Portsmouth, Wuhan University and the University of Malta. Our work with private, public and third-sector organisations include Arup, Esri, 1Spatial, Metropolitan Police Service, Transport for London, the Greater London Authority, UnLtd (the foundation for Social Entrepreneurs) and the British Trust for Conservation Volunteers (BTCV). The group supports teaching at all levels. We run the prestigious UCL MSc in GIS, established over 20 years ago and among the first such courses in the United Kingdom – details are available at http://www.ucl.ac.uk/gis The group includes 4 academic staff, with over 15 research students, 3 research assistants and 8 post-doctoral researchers.