| 2025 | Bothered By Bugs | Wainwright Prize source ↗ (opens in a new tab) | Shortlist · Children's Picture Books | |
| 2025 | The Forest of a Thousand Eyes | BookPage Best Books of the Year source ↗ (opens in a new tab) | Selection · Middle Grade | |
| 2023 | The Ogre Who Wasn’t | The Guardian Best Books of the Year source ↗ (opens in a new tab) | Selection · Children's | |
| 2023 | Island of Whispers | The Guardian Best Books of the Year source ↗ (opens in a new tab) | Selection · Young adult | |
| 2022 | Too Much Stuff | CILIP Carnegie Medals (Writing and Kate Greenaway Illustration) source ↗ (opens in a new tab) | Shortlist · Kate Greenaway Medal for Illustration | |
| 2017 | Tidy | CILIP Carnegie Medals (Writing and Kate Greenaway Illustration) source ↗ (opens in a new tab) | Shortlist · Kate Greenaway Medal for Illustration | |
| 2017 | Tidy | Kirkus Best Books of the Year source ↗ (opens in a new tab) | Selection · Picture Books | |
| 2013 | Again! | CILIP Carnegie Medals (Writing and Kate Greenaway Illustration) source ↗ (opens in a new tab) | Shortlist · Kate Greenaway Medal for Illustration | |
| 2012 | Wolf Won't Bite! | CILIP Carnegie Medals (Writing and Kate Greenaway Illustration) source ↗ (opens in a new tab) | Shortlist · Kate Greenaway Medal for Illustration | |
| 2011 | Again! | The Guardian Best Books of the Year source ↗ (opens in a new tab) | Selection · Children's | |
| 2010 | The Rabbit Problem | Kirkus Best Books of the Year source ↗ (opens in a new tab) | Selection · Children's | |
| 2009 | The Rabbit Problem | Financial Times Best Books of the Year source ↗ (opens in a new tab) | Selection · Children | |
| 2008 | Little Mouse's Big Book of Fears | CILIP Carnegie Medals (Writing and Kate Greenaway Illustration) source ↗ (opens in a new tab) | Winner · Kate Greenaway Medal for Illustration | |
| 2008 | Monkey and Me | CILIP Carnegie Medals (Writing and Kate Greenaway Illustration) source ↗ (opens in a new tab) | Shortlist · Kate Greenaway Medal for Illustration | |
| 2007 | Wolves | Boston Globe–Horn Book Awards source ↗ (opens in a new tab) | Honor · Picture Book | |
| 2007 | Orange Pear Apple Bear | CILIP Carnegie Medals (Writing and Kate Greenaway Illustration) source ↗ (opens in a new tab) | Shortlist · Kate Greenaway Medal for Illustration | |
| 2007 | Orange Pear Apple Bear | School Library Journal Best Books of the Year source ↗ (opens in a new tab) | Selection · Best Books | |
| 2007 | Orange Pear Apple Bear | Kirkus Best Books of the Year source ↗ (opens in a new tab) | Selection · Children's | |
| 2007 | Orange Pear Apple Bear | Publishers Weekly Best Books source ↗ (opens in a new tab) | Selection · Children's Picture Books | |
| 2006 | Wolves | Kirkus Best Books of the Year source ↗ (opens in a new tab) | Selection · Children's | |