| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Archie Ryder | 11 | Northampton | 45.40 |
| 2 | 2 | Dylan Lund | 10 | Wellingboro | 43.94 |
| 3 | 3 | Ethan Maison | 11 | Corby | 42.27 |
| 4 | 4 | Alexander Hughes | 11 | Kettering | 40.57 |
| 5 | 5 | Felix Mayer | 11 | Wellingboro | 41.42 |
| 6 | 6 | Joshua Daggett | 11 | Northampton | 42.41 |
| 7 | 7 | Hali Stevens | 11 | Corby | 44.78 |
| 8 | 8 | Lucas Tiago Brooksby | 10 | Rushden | 47.13 |