| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Harry LOCK | 11 | Eston | 1:32.74 |
| 2 | 2 | Erin STEPHENSON-MANGAN | 19 | Eston | 1:20.27 |
| 3 | 3 | Joe HORNER | 12 | Eston | 1:18.30 |
| Heat Number - 2 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 5 | Jacob WHARTON | 18 | Northall'ton | 1:08.56 |
| 3 | 4 | Maisie MORRIS | 16 | Northall'ton | 1:13.92 |