| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Lily Winch | 16 | Wareham | 1:21.47 |
| 2 | 2 | Tahlia O'Kelly | 16 | S Bournem'th | 1:20.13 |
| 3 | 3 | Amelia Chaffey | 16 | West Dorset | 1:09.23 |
| 4 | 4 | Betsy Vavasour | 16 | Poole | 1:07.33 |
| 5 | 5 | Tilly McHugh | 16 | Poole | 1:08.44 |
| 6 | 6 | Sophie Nixon | 16 | Bourmth Coll | 1:19.13 |
| 7 | 7 | Isabel Ness | 16 | S Bournem'th | 1:20.72 |