| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Abbie Winstanley | 16 | Cockermouth | 1:18.43 |
| 1 | 2 | Michaella Glenister | 16 | Leic Sharks | 1:18.40 |
| 2 | 3 | Isabelle Hepburn | 16 | Poole | 1:18.02 |
| 3 | 4 | Lily Jewell | 16 | Thanet Swim | 1:17.39 |
| 4 | 5 | Olivia Jay | 16 | Halesowen | 1:16.99 |
| 5 | 6 | Amy Corcoran | 16 | KingstonHull | 1:17.36 |
| 6 | 7 | Louise Edmunds | 16 | Mt Kelly | 1:17.92 |
| 7 | 8 | Phoebe Kelman-Johns | 16 | Sborne Storm | 1:18.05 |
| 8 | 9 | Victoria Dawson | 16 | Southport | 1:18.41 |
| 9 | 10 | Clarice Ellingworth | 16 | Melton M'bry | 1:18.60 |