| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Emma Chamberlain | 13 | Wellingboro | 39.85 |
| 2 | 2 | Willow Lera | 13 | Rushden | 38.74 |
| 3 | 3 | Olivia Balthasar | 13 | Brackley SC | 38.23 |
| 4 | 4 | Riley Weber | 13 | Corby | 33.61 |
| 5 | 5 | Poppy Okeife | 13 | Daventry | 36.41 |
| 6 | 6 | Emma Chirila | 13 | Kettering | 38.63 |
| 7 | 7 | Gwen Mackenzie-Wilson | 13 | Wellingboro | 38.98 |
| 8 | 8 | Esme Smith | 13 | Corby | 39.89 |