| Place | Name | AaD | Club | Time | R.T. | FINA Pt | 50 | |||
| 1. | Charlotte Rigg | 17 | Co Birm'ham | 1:11.30 | + 0.73 | 727 | 33.29 | |||
| 2. | Maia Hall | 17 | Ellesmere Co | 1:12.05 | + 0.75 | 705 | 34.27 | |||
| 3. | Carys O'Reilly | 16 | Co Leicester | 1:12.57 | + 0.73 | 690 | 33.86 | |||
| 4. | Jemimah Berkeley | 15 | RTW Monson | 1:12.73 | + 0.72 | 685 | 33.20 | |||
| 5. | Illizane Pinfold | 15 | Co Oxford | 1:13.57 | + 0.73 | 662 | 34.21 | |||
| 6. | Flora Perkin | 16 | Exeter City | 1:13.94 | + 0.71 | 652 | 34.97 | |||
| 7. | Eliza Powell | 15 | Bromley | 1:14.65 | + 0.65 | 634 | 35.74 | |||
| Lucia Grant | 16 | Plymouth Lea | DQ |