| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Mia Allan | 13 | Northampton | 1:26.72 |
| 2 | 2 | Hannah Marsden | 13 | Daventry | 1:24.55 |
| 3 | 3 | Maddie Walden | 13 | Northampton | 1:22.99 |
| 4 | 4 | Orna Lett | 13 | Daventry | 1:19.07 |
| 5 | 5 | Isabella Bishop | 13 | Rushden | 1:19.66 |
| 6 | 6 | Alice Wallinger | 13 | Wellingboro | 1:24.52 |
| 7 | 7 | Isla Robertson | 13 | Northampton | 1:26.00 |
| 8 | 8 | Charlotte Ellis | 13 | Northampton | 1:29.52 |