| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 1 | Isabella Peccei | 11 | Watford SC | 40.70 |
| 2 | 2 | Rhiann Manela | 11 | Stevenage | 40.27 |
| 3 | 3 | Emily Gray | 10 | Hatfield | 39.09 |
| 4 | 4 | Eva Lawson | 11 | Berkhamsted | 36.70 |
| 5 | 5 | Alexandra Yeabsley | 11 | Hatfield | 38.11 |
| 6 | 6 | Poppy Magill | 11 | Hatfield | 40.01 |
| 7 | 7 | Angelica Lazauskaite | 11 | Watford SC | 40.56 |
| 8 | 8 | Grace Bilantz | 11 | Co St Albans | 40.98 |