Sarah Dyer graduated from Kingston University in 2001. Her first book, Five Little Fiends went on to win the Bronze Smarties Prize and the UKRA (United Kingdom Reading Award) award. It has been an international success, translated into nine different languages.

Since then she has written and illustrated two more books for Bloomsbury, Clementine and Mungo,and Princess For A Day. She has also completed Mrs Muffly's Monster due to be published by Frances Lincoln in June 2008.

Sarah lives in Dalston, East London and teaches part-time on the Foundation Course and the Illustration BA Course at Kingston University.