| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Theo Woollams | 16 | Corby | 6:18.60 |
| 4 | 3 | Louis Booker | 16 | Wellingboro | 5:33.71 |
| 5 | 2 | Ethan Randall | 17 | Corby | 5:52.30 |
| Heat Number - 2 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 5 | Cameron Bell | 16 | Rushden | 5:18.00 |
| 3 | 7 | Sam Gray | 16 | Northampton | 5:06.75 |
| 4 | 9 | Samuel Cooke | 17 | Corby | 4:47.85 |
| 5 | 8 | Benjamin Gibbons | 16 | Northampton | 5:04.06 |
| 6 | 6 | Manav Mistry | 16 | Northampton | 5:07.30 |
| 7 | 4 | Noah Wrightson | 19 | Wellingboro | 5:25.13 |