| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 1 | Ruby WALLER | 15 | Sevenoaks | 1:13.13 |
| 1 | 2 | Ruth GODFREY | 15 | Sevenoaks | 1:12.91 |
| 2 | 3 | Scarlett DAVIE | 15 | White Oak | 1:11.19 |
| 3 | 4 | Emilia OLIVER | 15 | RTW Monson | 1:08.82 |
| 4 | 5 | I NIGHTINGALE-ELLIS | 15 | RTW Monson | 1:06.27 |
| 5 | 6 | Ivy HAGGERTY | 15 | Thanet Swim | 1:06.76 |
| 6 | 7 | Lilia FORNASIER | 15 | RTW Monson | 1:10.97 |
| 7 | 8 | Ellie LEWIS | 15 | Orpington OJ | 1:11.33 |
| 8 | 9 | Evie POTTICARY | 15 | Thanet Swim | 1:13.03 |
| 9 | 10 | Mia ARMSTRONG | 15 | Dartford | 1:13.53 |