| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 1 | Mia LEECH | 13 | Co Peterboro | 38.14 |
| 2 | 2 | Grace LEECH | 13 | UEA Norwich | 38.05 |
| 3 | 3 | Charlotte MARTIN | 13 | Co Peterboro | 38.00 |
| 4 | 4 | Keira FROSDICK | 13 | UEA Norwich | 35.32 |
| 5 | 5 | Freya LINES | 13 | St Felix Sch | 36.22 |
| 6 | 6 | Sophie PAYNE | 13 | Hatfield | 38.04 |
| 7 | 7 | Vejune PETRAITYTE | 13 | Basildon Ph | 38.09 |
| 8 | 8 | Aoife MARLEY | 13 | Witham Dolph | 38.36 |