Best David Walliams Book Sets for Children (2026)
Five Walliams sets and singles, plus two classic alternatives, compared by listed reading age, grade level, page count and series position for young readers.

At a glance
Top picks
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For a child hunting for best david walliams book sets for children, the question is which set fits the reader in front of you. This list compares Walliams sets and singles by listed reading age, grade level, page count and series position. Classic alternatives round out the list.
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Quick picks
Best Series Starter World’s Worst Children 1 by Walliams: Book 1 of 8, grade level 2 to 3, reading age 7 years and up Check price on Amazon
Best Standalone Slime by Walliams: 320 pages, reading age 7 to 9 years, 1st edition Check price on Amazon
Best Box Set Worlds Worst Children Set by Walliams: Three Walliams stories in one collection Check price on Amazon
Classic Adventure Five on a Treasure Island by Blyton: Book 1 of 21, reading age 9 to 11 years Check price on Amazon
Five-Book Set The Bad Guys Box Set by Blabey: Five books in one box set for young readers Check price on Amazon
The picks
| # | Product | Shelf Score | Buy |
|---|---|---|---|
| 1 | The Bad Guys Box Set by Blabey | 9.8/10 | Buy on Amazon |
| 2 | World's Worst Children 1 by Walliams | 9.7/10 | Buy on Amazon |
| 3 | Slime by Walliams | 9.6/10 | Buy on Amazon |
| 4 | Worlds Worst Children Set by Walliams | 9.5/10 | Buy on Amazon |
| 5 | Five on a Treasure Island by Blyton | 9.4/10 | Buy on Amazon |

The Bad Guys Box Set by Blabey
A 1440-page boxed set collecting the first five illustrated adventures of animal characters attempting good deeds.
Pros
- Includes the first five books of the series in one boxed set
- The listing states the pages are in full color
- Illustrated comic format appeals to reluctant readers
- Grade level 2 to 5 fits elementary and early middle grade readers
Cons
- 1440 pages total across five volumes requires storage space
- The reading age of 6 to 8 years is marked as from customers
- Published February 27, 2018, so newer individual installments are not included
- Fast-paced graphic storytelling may not satisfy readers wanting longer text chapters
Pros
- Book 1 of 8, opening a long series
- Grade level 2 to 3, reading age 7 years and up
- 272 pages, a manageable length
Cons
- Later books sold separately
- Beastly characters, not for sensitive readers
- Single volume, not a set
Pros
- Listed reading age of 7 to 9 years
- 320 pages, a full-length story
- 1st edition, July 21, 2022
Cons
- No grade level stated
- Single volume rather than a box set
- No description beyond title and specs
Pros
- Three books in one set
- World's Worst Children stories together
- One purchase, several stories
Cons
- No reading age or grade level
- No page count stated
- Author listed as unknown author
Pros
- Book 1 of 21, a classic series
- Listed reading age of 9 to 11 years
- 192 pages, shorter than the singles
Cons
- Not a Walliams book
- Part of a 21-book series
- No grade level stated
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More picks to compare
The Terrific Ten by WalliamsTen Walliams novels in one box set for readers age 9 to 12 years.Check on Amazon
Compare the picks
| Book | Shelf Score | Author | Pages | Reading age or grade | Amazon |
|---|---|---|---|---|---|
| World’s Worst Children 1 by Walliams | 9.7/10 | David Walliams | 272 | 7 years and up / grade 2 to 3 | |
| Slime by Walliams | 9.6/10 | David Walliams | 320 | 7 to 9 years | View on Amazon |
| Worlds Worst Children Set by Walliams | 9.5/10 | Unknown author | Not stated | Not stated | View on Amazon |
| Five on a Treasure Island by Blyton | 9.4/10 | Enid Blyton | 192 | 9 to 11 years | View on Amazon |
| The Bad Guys Box Set by Blabey | 9.8/10 | Aaron Blabey | Not stated | Not stated | View on Amazon |
Book details as published on each listing, collected 25 October 2026.
How we scored them
The Shelf Score weighs fit, contents and edition, value, and the listed reading age or level. Three of the five listings give a reading age, and one also gives a grade level. How we pick explains the weights.
| Book | Shelf Score | Fit /35 | Contents /25 | Value /25 | Age/level /10 |
|---|---|---|---|---|---|
| World’s Worst Children 1 by Walliams | 9.7 | 30 | 21 | 19 | 9 |
| Slime by Walliams | 9.6 | 29 | 21 | 19 | 7 |
| Worlds Worst Children Set by Walliams | 9.5 | 32 | 15 | 21 | 0 |
| Five on a Treasure Island by Blyton | 9.4 | 16 | 20 | 18 | 7 |
Scores run from 9.2 to 9.8: each book’s point total is placed on that range, so more points always means a higher score. Reading age or level counts on a list where at least one listing gives one, and a book whose listing gives none then scores zero on it. Where no listing gives one, the score is taken over the other 85 points. Books carry no warranty, so warranty is not scored.
How to choose the best david walliams book sets for children
Match the reading age and grade level
The World’s Worst Children 1 lists grade level 2 to 3 with a reading age of 7 years and up, while Slime lists 7 to 9 years and Five on a Treasure Island lists 9 to 11 years. For more classic stories at this level, see our famous children’s story books list.
Start with Book 1 of a series
The World’s Worst Children 1 is Book 1 of 8, and Five on a Treasure Island is Book 1 of 21. The Bad Guys Box Set gathers Books 1 to 5 in one purchase.
Sets versus single volumes
A set suits a reader who already likes the author, while a single volume suits a reader trying Walliams for the first time. For sets bought as presents, see our book box sets for gifting list.
Before you buy
- Check the format: the three-book collection is a set.
- For a series, start with Book 1.
- Compare the listed reading age with the reader before buying.
Frequently Asked Questions
Where should a reader start with David Walliams book sets?
Start with The World’s Worst Children 1, Book 1 of 8, or the three-book collection.
What age do these book sets suit?
Slime lists 7 to 9 years, The World’s Worst Children 1 lists 7 years and up, and Five on a Treasure Island lists 9 to 11 years.
Which edition of Slime is listed here?
The Slime listing gives a publication date of July 21, 2022, and an edition of 1st.
Related lists
See every middle grade list and all kids and teens lists.
More lists: famous children’s story books, book box sets for gifting and twisted fiction box sets.



