| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Sienna Winston | 10 | BUXA | |
| 2 | 4 | Henry Goodall | 10 | BUXA | |
| 3 | 6 | Elan Stead | 11 | BUXA | |
| 4 | 5 | Heidi Henson | 10 | BUXA | |
| 5 | 3 | Abbie Scowcroft | 8 | BUXA | |
| 6 | 1 | Bria Lumbert | 10 | BUXA | |
| Heat Number - 2 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 8 | Evie Willis | 12 | BUXA | 1:02.24 |
| 2 | 10 | Frederick Frith | 9 | BUXA | 48.00 |
| 3 | 12 | Prudie Dawson | 13 | BUXA | 46.14 |
| 4 | 11 | Emily Pile | 11 | BUXA | 46.30 |
| 5 | 9 | Ada Kirkland | 11 | BUXA | 53.90 |
| 6 | 7 | Hattie Wild | 9 | BUXA | |