While the UK was a pioneer in promoting sustainable development in the 1990s, today's government seems remarkably quiet. What characterizes the sustainable development process in the UK during these three decades? Is this a linear process towards decreased attention given to sustainable development or have there been important turning points? In this chapter, we elaborate on these questions by tracing the political process on sustainable development from 1994 to 2020. We identify three periods, in which there are two turning points: After being an early promoter of sustainable development from 1994, the first turning point came in 2010 with the mainstreaming of sustainable development and dissolving of several administrative tools such as the Sustainable Development Commission. The second turning point was in 2019, when new initiatives started to merge the climate and sustainability agendas.