Parkour professionals will teach about 20 young people, aged between eight and 19, techniques and moves used in the discipline. It is an expressive sport where the aim is to move your body as efficiently and effectively as possible to navigate the obstacles around you. The sport consists of finding new ways through the city landscape by scaling walls, jumping down steps and running across buildings. Councillor Sarah Richardson, cabinet member for children's services at Westminster City Council, said: "The...