The freerunners will perform to their own soundtrack and be judged by their peers on skill, technical ability and creativity. Among the challengers for the title Barclaycard World Freerun Champion are British hopes Pip Andersen, of Somerset, and Tim Shieff, of Derby. They will be up against freerunners from as far as Brazil, South Africa, the United States and New Zealand. One of the night's organisers Paul Corkery, 32, known as Ez, said: "We've built a 26ft pyramid with three levels, railings and vault boxes inside the Roundhouse.