The seventh Cardiff Children’s Literature festival gets off to mischievous start this December as David Baddiel comes to Cardiff. Comedian and author David Baddiel has written five wildly entertaining books for young readers that have sold over 1 million copies. David will be at City Hall on Thursday 13th December to talk about his latest laugh out-loud, wish fulfilment adventure story, Head Kid. Bracket Wood is about to be visited by the school inspectors. But there’s one big problem: Ryan…