This volume contains the full papers presented at HCI 2005, the 19th Annual Conference of the British HCI Group, a specialist group of the BCS. "People and Computers XIX" includes leading edge discussions outlining the latest research results and novel systems from the foremost research and development groups and laboratories throughout the UK and Europe. This year’s areas are: - Human-centred Interaction Design – how can we optimise creativity and exploit novel techniques, such as probes, in improving our understanding, analysis and design to meet human needs - Communities of the Future – in an era of ambient pervasive, ubiquitous and mobile computing, how do we support the evolution of communities, their protocols and manners, the sense of self-management, interdependency, responsilibility and support - Industrial Strength Solutions and Tools – robust usability methods, light-touch but effective methodologies, alignment with modern business such as marketing, change management and software engineering, to achieve quantifiable ROI