| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 2 | Charlie Husbands | 10 | Wellingboro | 3:29.88 |
| 3 | 6 | Daniel Mustata | 12 | Corby | 3:03.70 |
| 4 | 10 | Jakub Siedlak | 12 | Corby | 2:50.00 |
| 5 | 8 | Jack Tindle | 11 | Northampton | 2:56.85 |
| 6 | 4 | Reuben Tipping | 12 | Northampton | 3:06.06 |
| Heat Number - 2 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 3 | Rahul Reedha | 10 | Corby | 3:15.40 |
| 3 | 7 | Daniel Rees | 12 | Daventry | 3:00.18 |
| 4 | 11 | Jack Webb | 12 | Wellingboro | 2:46.61 |
| 5 | 9 | James Oscroft | 10 | Northampton | 2:56.73 |
| 6 | 5 | Eric Butans | 12 | Corby | 3:05.82 |
| 7 | 1 | Oscar Venn | 11 | Northampton | 3:39.62 |