(Photograph) - Well-known chatterbox Chris Tarrant led children from Leapfrog nursery in Mill Hill, London, in a special 'chattering rhyme' to launch the first-ever Chatterbox Challenge in aid of the charity ICAN for children with speech and language difficulties. Chris said, 'As someone whose job is all about talking I don't know how I'd cope if I couldn't communicate. Chatterbox challenge promises youngsters hours of fun, and I CAN much-needed funds.' For details on how to join the nationwide challenge call 0845 130 3962 or log on to www.ican.org.uk/chatterbox. Photograph by Eddie MacDonald