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David Walliams, author of the best-selling children's book, Gangsta Granny (now on the West End stage), told Danny Baker that showbiz guru Simon Cowell once offered him an idea for a book. Walliams, of Little Britain, and Britain's Got Talent fame, also spoke about the competitive nature of writing children's books and the satisfaction he gets from meeting the children who've read his books.

This clip is originally from The Danny Baker Show on Saturday 29 July 2017