| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Maisie Macartney | 16 | Thanet Swim | 58.94 |
| 1 | 2 | Brodie Judge | 16 | Ealing | 58.74 |
| 2 | 3 | Sophie Smith | 16 | St Thomas | 58.14 |
| 3 | 4 | Jessica Podger | 16 | Co Bristol | 58.07 |
| 4 | 5 | Laura McNab | 16 | Team Bath AS | 57.16 |
| 5 | 6 | Athena Clayson | 16 | Mt Kelly | 57.82 |
| 6 | 7 | Jemima Hall | 16 | Hillingdon | 58.10 |
| 7 | 8 | Jasmine McCrea | 16 | Poole | 58.21 |
| 8 | 9 | Emma Harvey | 16 | Millfield | 58.79 |
| 9 | 10 | Summer Kennedy | 16 | Derventio | 59.11 |