Sarah Crossan has lived in Dublin, London and New York, and now lives in Hertfordshire. She graduated with a degree in philosophy and literature before training as an English and drama teacher at Cambridge University.

Since completing a masters in creative writing, she has been working to promote creative writing in schools.

The Weight of Water and Apple and Rain were both shortlisted for the CILIP Carnegie Medal. In 2016, Sarahwon the CILIP Carnegie Medal as well as the YA Book Prize, the CBI Book of the Year award and the CLiPPAPoetry Award for her novel, One.

Rebecca Cobb graduated from the Falmouth School of Art in 2004. She has collaborated with the Gruffalo author Julia Donaldson on picture books including The Paper Dolls, Orange Prize-winner Helen Dunmore on books including The Lonely Sea Dragon and popular film-maker Richard Curtis on Christmas titles including The Empty Stocking. Rebecca was the winner of the 2013 Waterstones Prize and has twice been shortlisted for the prestigious Kate Greenaway Award.