Three climbers decided to split from the main party and climb alone at Rivelin. None were experienced leaders so they had only sufficient gear to build an Anchor for top roping. One of the group with no leading experience decided, however, that they wanted to try leading. Using the limited rack available, the leader began the ascent and managed to place one piece of gear. On continuing, it became apparent to one of the group below that the lead climber was in danger of having progressed sufficiently high that a fall might result in grounding. The person shouted a warning, but the leader continued and fell. The belayer was approximately 30 kg lighter than the climber and was lifted off the ground colliding with the crag and causing minor hand injuries. Holding the rope fast had also led to minor rope burns. The climber hit the ground and fell smashing their head against a rock. Fortunately, their helmet prevented serious injury.