Chris Evans and Clare Balding (of all people) present an extreme sports show from the Echo Arena in Liverpool, where celebrities aim to raise money for charity by competing in activities including monster-truck racing, BMX riding and inline speed skating, with the winners of each category facing off in a final showdown. Double Olympic champion Kelly Holmes, former EastEnders actress Kacey Ainsworth, Hollyoaks star Sarah Jayne Dunn and Snog, Marry, Avoid host Jenny Frost are the female contestants, and their male competitors are former rugby union star Jonah Lomu, adventurer Charley Boorman, musician Sam Branson and comedian Rufus Hound. Continues tomorrow.