Polly graduated from Brighton Art School in 1999, where she studied illustration. She still lives and works in Brighton. Her best-selling book Penguin won the Nestlé Silver Award in 2007, The Book Trust Early Years Award 2007, The Red House Award 2008 and was shortlisted for the Greenaway. Her Tilly and Friends books were turned into a successful series on CBeebies and sold around the world. Polly is also the co-founder of Long Nose Puppets, an award-winning puppet company who have made and toured successful adaptations of her books around the UK.