| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Isla TURNER | 12 | Gwich Royals | 1:25.51 |
| 2 | 2 | Poppy TRAYNIER | 12 | Beckenham | 1:26.09 |
| 3 | 3 | Josephine LAWN | 12 | Bromley | 1:22.39 |
| 4 | 4 | Ruby HALL | 12 | White Oak | 1:19.35 |
| 5 | 5 | Harriet GRIFFITHS | 12 | RTW Monson | 1:22.36 |
| 6 | 6 | Dakota LYNCH | 12 | Sevenoaks | 1:22.62 |
| 7 | 7 | Olivia NORLEY | 12 | RTW Monson | 1:25.75 |
| 8 | 8 | Ellie POST | 12 | Black Lion | 1:28.74 |