| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Ella-Grace Unsworth | 12 | Wigan | 1:35.00 |
| 2 | 4 | Olivia Knox | 11 | Wigan | 1:23.00 |
| 3 | 6 | Tilly Collins | 13 | Wigan | 1:20.77 |
| 4 | 8 | Kian Marjaei | 20 | Wigan | 1:00.77 |
| 5 | 7 | Harry Brew | 19 | Wigan | 1:15.61 |
| 6 | 5 | Poppy Mather | 13 | Wigan | 1:22.23 |
| 7 | 3 | Sophie Willitts | 12 | Wigan | 1:31.20 |
| 8 | 1 | KC Grimshaw | 13 | Wigan | 3:00.00 |