The fourth series, which was produced in 1998 (and the last to be set at the castle on Table Mountain), comprised five episodes focusing on units of measurement. Brimstone and Digit also underwent a second redesign for their final series by second new animators Blue Sunflower Animation, but their appearance was only slightly different to how they had appeared for the second and third series.
| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S04E01 | Sports Day |
January 12, 1999
BBC Two
|
20 | |
| S04E02 | The King's New Clothes |
January 19, 1999
BBC Two
|
20 | |
| S04E03 | Decorating |
January 26, 1999
BBC Two
|
20 | |
| S04E04 | Treasure Hunt |
February 2, 1999
BBC Two
|
20 | |
| S04E05 |
Holidays
season finale
|
February 9, 1999
BBC Two
|
20 |
No artwork of this type.
No artwork of this type.
No artwork of this type.