500 Words - the UK's largest children's writing competition (for 5 - 11 year olds) - is back! On this week's episode, Sara is joined by bestselling children's author, actor and screenwriter - Charlie Higson - who is one of the judges for the prize. They chat about the prize, how to enter - and give some writing inspiration and tips. They also chat about Charlie's new book - 'Willie Willie Harry Stee' - based on his history podcast, with illustrations by Jim Moir. If you want to find out more about the 500 Words Competition, how to enter, and the all important Terms and Conditions, go to bbc.co.uk/500words

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