| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Georgia Parker | 15 | Corby | 42.33 |
| 2 | 2 | Esmee Browne | 15 | Rushden | 39.82 |
| 3 | 3 | Chloe Perkins | 15 | Kettering | 38.79 |
| 4 | 4 | Beth Rebhan | 15 | Corby | 38.30 |
| 5 | 5 | Kimberley Hayes | 15 | Northampton | 38.32 |
| 6 | 6 | Saxon Swann | 15 | Corby | 39.39 |
| 7 | 7 | Kennedy McHugh | 15 | Corby | 41.74 |
| 8 | 8 | Mackenzie Wainwright | 15 | Northampton | 42.44 |