Pip Jones lives in East London with her partner, her two daughters and a real invisible cat (it doesn't catch mice, but it doesn't need a litter tray either, so there are pros and cons).

She writes a lot. She even owns a writing cloak! And she spends days on end working out how to get good rhymes, such as 'snuffle' and 'kerfuffle', into stories. Pip won the inaugural Greenhouse Funny Prize in 2012 with Squishy McFluff, The Invisible Cat, her first book.

Lucy Fleming has been an avid doodler and bookworm since early childhood, and graduated from the University of Lincoln with a first-class honours degree in Illustration. She has illustrated a number of books including River Rose and the Magical Christmas, written by singer Kelly Clarkson, The Snow Queen and Rapunzel, both written by Saviour Pirotta, and Fum, written by Karl Newson. Originally from Warwickshire, she now lives and works near Sheffield.