Three key members of the Atkins London 2012 team - James Apted, Ian Morrissey and Ian Mead - give a brief overview of the challenges involved in remediating the London 2012 Olympic Park site ready for the Games. At 246 hectares, it was one of the largest land remediation projects undertaken in the UK to date. Our work included soil washing, bioremediation, groundwater treatment, wetland planting, river edge engineering and ecology. This presentation was first delivered in October 2013.