Ciaran Murtagh is a writer and actor. Andy Stanton has said 'Ciaran is one of the funniest people I know!' (and Andy Stanton knows at least two people). His first book, Dinopants, was published in 2009 and spawned three sequels - one more than Toy Story. He also writes TV shows and has recently been involved with scripting The Amazing World of Gumball, Boyster, Mr Bean, Shaun the Sheep, The Slammer, Treefu Tom, Dennis and Gnasher, DNN and The Legend of Dick and Dom. His latest adult sitcom is currently optioned by Hat Trick. Ciaran regularly appears on CBBC and can be seen in Dick and Dom's Hoopla and in The Slammer. Ciaran lives in London. Find out more about Ciaran at www.ciaranmurtagh.com or follow him on Twitter @CiaranMurtagh

Tim Wesson is an illustrator and author who draws in different styles for both children and adults and has recently written and illustrated the MEGA MASH-UP series, published by Nosy Crow, for children aged 6-9. His latest book in the series is called Cowboys v Trolls in the Arctic.