Sarah Khan is a writer and editor, specializing in children's books, from non-fiction, to fiction and puzzles.

She created the popular series of puzzle cards for Usborne, first creating a box of general brain puzzles, the success of which led onto maths, number, picture, word and memory puzzle boxes.

Sarah currently draws and devises puzzles for Spot the Difference section of The Telegraph's Weekend magazine.

Chris Dickason's irreverent sense of humour was born from years as both a mild mannered doodler and angry burger flipper. Taking inspiration as much from Henri Matisse as he does The Muppets, as well as odd bits of packaging collected from foreign supermarkets, Chris' work has been described as charming and visually striking with a sharp graphic style. His illustrations are populated with rambunctious characters that are a cleverly crafted mix of an uncomplicated line style and wonky perspectives.