Duncan, Martin Short and Vanina Ickx drove the #18 Rollcentre Racing Pescarola Judd to seventh place in the 1000 km of Monza, the second round of the 2008 Le Mans Series season.
Duncan was a guest driver at Thruxton for rounds seven and eight of the Porsche Carrera Cup. An eventful weekend saw him take a ninth place in one race and record a DNF in the other.