| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Amelia ROGERS | 12 | Middlesboro | 1:32.44 |
| 2 | 4 | Olivia GREEN | 15 | Middlesboro | 1:22.50 |
| 3 | 6 | Pearl LIGHTWOOD | 17 | Middlesboro | 1:11.74 |
| 4 | 8 | Sydney DEARLOVE | 15 | Middlesboro | 1:07.00 |
| 5 | 7 | Daisy DUNNING | 13 | Middlesboro | 1:10.96 |
| 6 | 5 | Natasha RICE | 16 | Middlesboro | 1:19.63 |
| 7 | 3 | Jessica YOUNG | 12 | Middlesboro | 1:22.79 |
| 8 | 1 | Ananya PRASAD | 12 | Middlesboro | 1:44.32 |