The first of two programmes from London's Wembley Arena celebrating the tenth anniversary of Childline, the free national helpline for children in trouble ordanger. Tonight's programme is introduced by Radio 1 DJs Steve Lamacq and Jo Whiley and the artists appearing include indie band Sleeper (lead singer Louise Wener), Crispian Mills's sixties-influenced retro-popsters Kula Shaker and rock-pop band Terrorvision. Plus further contributions from Cast, Ocean Colour Scene and Icelandic former Sugar Cube, Bjork.