| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 1 | Illizane Pinfold | 15 | Co Oxford | 1:14.23 |
| 2 | 2 | Lucia Grant | 16 | Plymouth Lea | 1:13.34 |
| 3 | 3 | Jemimah Berkeley | 15 | RTW Monson | 1:12.90 |
| 4 | 4 | Charlotte Rigg | 17 | Co Birm'ham | 1:12.02 |
| 5 | 5 | Carys O'Reilly | 16 | Co Leicester | 1:12.76 |
| 6 | 6 | Maia Hall | 17 | Ellesmere Co | 1:12.95 |
| 7 | 7 | Flora Perkin | 16 | Exeter City | 1:13.89 |
| 8 | 8 | Eliza Powell | 15 | Bromley | 1:14.36 |