| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Cadwaladr Quests (Book One: Tangled Time) USA: The Unique SSAT & ISEE Lower/Middle Vocabulary Novel | 978-1-9993018-7-3 (1-9993018-7-0) | 2020 |
| The Cadwaladr Quests : The unique and engaging vocabulary aid for all eleven-plus, SATs and independent school entrance exams, including Key Stage 3 | 978-1-9993018-0-4 (1-9993018-0-3) | 2018 |