| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 1 | Maisy Jeffery | 15 | Killerwhales | 1:24.13 |
| 1 | 2 | Holly Bawden | 15 | Brentwood | 1:22.40 |
| 2 | 3 | Isabella Helliwell | 15 | Basildon Ph | 1:21.49 |
| 3 | 4 | Jeslene Sandhu | 15 | Epping For't | 1:18.33 |
| 4 | 5 | Ada Yeow | 15 | Bo Waltham F | 1:17.41 |
| 5 | 6 | Daisy-Mai Doel | 15 | Basildon Ph | 1:17.76 |
| 6 | 7 | Mollie Bird | 15 | Colchester | 1:21.33 |
| 7 | 8 | Genna Lee | 15 | Harlow Pen | 1:21.99 |
| 8 | 9 | Alice Wilson | 15 | New Hall | 1:23.84 |
| 9 | 10 | Freya Hill | 15 | New Hall | 1:24.26 |