A glittering array of stars are ready and willing to join in as this year's marathon fundraising event gets under way. Terry Wogan is joined by co-hosts, including Tess Daly, Fearne Cotton and Zoë Ball Ball, for the extravaganza in aid of disadvantaged children. The party begins with performances by the cast of the West End musical Matilda and boy band JLS, plus there's an exclusive treat from Doctor Who.