| Final | ||||||
| Lane | Comp.No. | Name | YoB | Cat | Club | Time |
| 0 | 1 | Amanda Readhead | 77 | SM8 | Maxwell | 3:29.03 |
| 1 | 2 | Coral Farrell | 01 | SM10 | Warrington W | 3:06.55 |
| 2 | 3 | Isabella Haynes | 08 | SM9 | S Bournem'th | 3:07.62 |
| 3 | 4 | Evie Lambert | 07 | SM9 | Bo Kirklees | 3:04.43 |
| 4 | 5 | Connie Ratley | 08 | SM9 | Colchester | 2:56.20 |
| 5 | 6 | Brooklyn Hale | 10 | SM9 | Cockermouth | 3:01.79 |
| 6 | 7 | Astrid Carroll | 09 | SM13 | Bo Kirklees | 2:52.06 |
| 7 | 8 | Lucy Jones | 07 | SM9 | Newtown | 3:16.59 |
| 8 | 9 | Abigail Wickens | 07 | SM8 | Flitwick | 3:27.66 |
| 9 | 10 | Ela Letton-Jones | 06 | SM13 | Swim Gwynedd | 3:05.29 |