| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 2 | Jack Webb | 12 | Wellingboro | 3:51.46 |
| 3 | 4 | Jack Tindle | 11 | Northampton | 3:47.88 |
| 4 | 6 | James Oscroft | 10 | Northampton | 3:28.62 |
| 5 | 5 | Rahul Reedha | 10 | Corby | 3:43.28 |
| 6 | 3 | Reuben Tipping | 12 | Northampton | 3:50.87 |
| 7 | 1 | Noah Patterson | 10 | Wellingboro | 3:59.39 |