Clare Balding presents coverage of the Badminton Horse Trials in Gloucestershire, where the world's top event riders will vie for the fiercely-contested Rolex Grand Slam. Anticipation is higher than ever in 2013 after the famous event was cancelled 12 months ago because heavy rain left the course flooded. A raft of Olympic team medalists have the chance to show off their cross-country skills, and the four-star course will run left handed with 'clusters of action and long gallops in between'. Show less