In 2011, Andrew received the Bisto honorary award for book illustration. In partnership with Caitríona Nic Sheáin, Andrew has co-written and illustrated three books of fiction for children, Cogito, Pop! and Cúraille i gCeannas.
In June 2018 Graffeg published Molly and the Stormy Sea, a children’s picture book illustrated by Andrew and written by Malachy Doyle. The book was published simultaneously in English paperback and hardback as well as Welsh and Irish language editions, Mali a’r Môr Stormus and Muireann agus an Fharraige Fhiáin.
The second book in the Molly series, Molly and the Whale, published in July 2019 in English, Welsh and Irish editions.