| Name | Age | School | Time | Splits | ||
| 1 | Charlotte Bryan | 15 | Wales | 1:05.75 | 32.08 | 1:05.75 |
| 2 | Emma Saunders | 16 | England | 1:06.34 | 32.97 | 1:06.34 |
| 3 | Lynn Macarthur | 16 | Scotland | 1:07.75 | 32.14 | 1:07.75 |
| 4 | Grace Branagan | 15 | Ireland | 1:07.77 | 33.53 | 1:07.77 |
| 5 | Sara Hamilton | 16 | Scotland | 1:07.81 | 33.30 | 1:07.81 |
| 6 | Emma Cassidy | 15 | Ireland | 1:08.38 | 32.49 | 1:08.38 |
| 7 | Stephanie Blakeburn | 16 | England | 1:08.90 | 33.87 | 1:08.90 |
| 8 | Seren Jones | 16 | Wales | 1:09.74 | 33.72 | 1:09.74 |