| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Heather Sayers | 11 | Weymouth | 1:30.78 |
| 2 | 2 | Tabitha Buchan-Moore | 11 | West Dorset | 1:30.19 |
| 3 | 3 | Poppy Collins | 11 | Poole | 1:27.74 |
| 4 | 4 | Daria Korotkova | 11 | Poole | 1:24.04 |
| 5 | 5 | Layla Wareing | 11 | West Dorset | 1:24.41 |
| 6 | 6 | Amelia Newsum | 11 | S Bournem'th | 1:29.33 |
| 7 | 7 | Daisy Kirkpatrick | 11 | Wareham | 1:30.31 |
| 8 | 8 | Mia Palmer | 11 | Poole | 1:36.95 |