| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 1 | Chloe Grosvenor | 13 | Co Birm'ham | 1:19.96 |
| 1 | 2 | Elizabeth Adam | 13 | Leyland Barr | 1:18.72 |
| 2 | 3 | Charlotte Shao | 13 | Camden Swiss | 1:17.96 |
| 3 | 4 | Harriet Griffiths | 13 | RTW Monson | 1:17.24 |
| 4 | 5 | Iola Bellinger | 13 | Salisbury | 1:16.94 |
| 5 | 6 | Maisie Fisher | 13 | Millfield | 1:17.12 |
| 6 | 7 | Esme Hall | 13 | N & D PP SC | 1:17.90 |
| 7 | 8 | Halle Robinson | 13 | Poole | 1:18.28 |
| 8 | 9 | Marina Kennedy | 13 | Camden Swiss | 1:18.72 |
| 9 | 10 | Eloise Minto | 12 | Chelmsford | 1:19.96 |