Send your question for Mr Gum creator Andy Stanton and win a copy of Natboff!
Questions will be selected by Mango Bubbles Books, in consultation with Egmont Publishing, and sent to Andy Stanton. His answers will be included in a special author interview to be published on Mango Bubbles Books.
Three winners will receive a copy of Natboff! and Andy Stanton will select one of them to receive a signed copy.
Winners must be in the UK. Competition closes midnight on Sunday 15 July 2018.