The document summarizes the UK experience with open data and the establishment of data.gov.uk. It discusses the objectives of creating a single portal, establishing public data principles, providing datasets using open standards, and developing an open government license. It also discusses lessons learned, such as using various arguments to promote open data, the need for engagement at multiple levels of government, and continuously engaging with developers to highlight applications. The overall message is that open data, standards, licensing, and engagement can create social and economic value when approached adaptively.