The tagline, ‘You Can’t Move History: You Can Secure the Future’, encapsulated the battle at the heart of the campaign to retain the Southbank Undercroft skate spot in the light of planned redevelopment of the Southbank Centre, London. The 2013-15 campaign against relocation adopted a position of no compromise and provides a lens through which three key areas of heritage theory and practice can be examined. Firstly, the campaign uses the term found space to reconceptualise authenticity and places a greater emphasis on embodied experiences of, and emotional attachments to, historic urban spaces. Secondly, the paper argues that the concept of found space opens up a discussion surrounding the role of citizen expertise in understanding the experiential and emotional values of historic urban spaces. Finally, the paper considers the wider relevance of found space in terms of reconceptualising authenticity in theory and practice. The paper is accompanied by the award-winning film ‘You Can’t Move History’ which was produced by the research team in collaboration with Paul Richards from Brazen Bunch and directed by skater, turned filmmaker, Winstan Whitter