Tour de France dream in doubt for Mark Cavendish as he dislocates shoulder yards from finish in horror crash which hands victory to German rival and even made David Cameron wince

The future of the Tour remains in doubt for British rider Mark Cavendish, who had been hoping to take the leader's yellow jersey in his mother's hometown of Harrogate, Yorkshire, before crashing out today. The cycling sprinter suffered a dislocated shoulder after colliding with Australia's Simon Gerrans just yards from the finish line (centre). Prime Minister David Cameron winced (right) as he watched the British star fall to the ground as the riders competed in the hectic finish. The crash meant the coveted yellow jersey - presented by the Duchess of Cambridge - ended up being given to German rider Marcel Kittel (left).