| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 1 | Isabella JONES | 13 | RTW Monson | 1:24.99 |
| 1 | 2 | Ruby HALL | 13 | White Oak | 1:24.79 |
| 2 | 3 | Imogen GAMBRILL | 13 | White Oak | 1:23.84 |
| 3 | 4 | Lowri WILLIAMS | 13 | RTW Monson | 1:22.76 |
| 4 | 5 | Josephine LAWN | 13 | Bromley | 1:15.43 |
| 5 | 6 | Harriet GRIFFITHS | 13 | RTW Monson | 1:21.56 |
| 6 | 7 | Lola BOWRA | 13 | Black Lion | 1:23.64 |
| 7 | 8 | Zoe TOLLIT | 13 | RTW Monson | 1:24.28 |
| 8 | 9 | Amelia ASHTON | 13 | Sevenoaks | 1:24.90 |
| 9 | 10 | Olivia COOLEY | 13 | Maidstone SC | 1:25.11 |