| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Jack Jackson | 11 | Northampton | 4:15.00 |
| 4 | 2 | Kuba Kopec | 11 | Bedford SS | 3:36.41 |
| 5 | 3 | Seth Gillies | 13 | Northampton | 3:35.45 |
| Heat Number - 2 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | Kushal Mistry | 13 | Northampton | 3:31.81 |
| 2 | 6 | Oscar Venn | 12 | Northampton | 2:55.20 |
| 3 | 8 | Maxwell Burdett | 12 | Co Leicester | 2:34.90 |
| 4 | 10 | Edun Rowe | 16 | Northampton | 2:07.00 |
| 5 | 9 | Ryan Close | 16 | Bedford SS | 2:16.99 |
| 6 | 7 | Emerson-Blu Gupwell | 14 | Co Leicester | 2:39.30 |
| 7 | 5 | Jacob Quennell | 11 | Northampton | 3:31.12 |