Governments around the world collect information. This information is often non-personal public sector information. It relates to transport and education, health and the environment, business and leisure. Publishing and releasing this information in a machine readable way could lead to huge economic and social improvements. It would also make the process of Government more transparent and give rise to new classes of information business. This talk outlined developments in the UK and US which are showing the potential of building a Web of Open Linked Data using Semantic Web Standards. It discussed the technical as well as social and cultural challenges. It gave examples of the applications that can result and considered the impact this could have across a number of dimensions.