| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Hannah Marsden | 13 | Daventry | 39.03 |
| 2 | 2 | Orna Lett | 13 | Daventry | 38.53 |
| 3 | 3 | Mia Allan | 13 | Northampton | 37.83 |
| 4 | 4 | Maddie Taylor | 13 | Corby | 36.58 |
| 5 | 5 | Isabella Bishop | 13 | Rushden | 37.55 |
| 6 | 6 | Maddie Walden | 13 | Northampton | 38.05 |
| 7 | 7 | Poppy Blowfield | 13 | Corby | 39.01 |
| 8 | 8 | Julia-Stefania Radac | 13 | Northampton | 39.43 |