| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 1 | Isla MARSHALL | 18 | RTW Monson | 1:11.34 |
| 1 | 2 | Maisie CHAMBERS | 17 | Sevenoaks | 1:10.69 |
| 2 | 3 | Kahlen ARUNDELL | 17 | Black Lion | 1:09.56 |
| 3 | 4 | Hannah MURPHY | 17 | RTW Monson | 1:06.00 |
| 4 | 5 | Mia COLYER | 19 | Black Lion | 1:04.57 |
| 5 | 6 | Jessica GABLE | 17 | RTW Monson | 1:05.70 |
| 6 | 7 | Evie STOCKDALE | 18 | RTW Monson | 1:06.45 |
| 7 | 8 | Blythe JOLLEY-ELLIS | 20 | Orpington OJ | 1:10.06 |
| 8 | 9 | Amy CONNER | 18 | Black Lion | 1:11.02 |
| 9 | 10 | Hannah STROVER | 19 | Orpington OJ | 1:11.60 |