| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Dylan Seelig | 12 | Northampton | 47.20 |
| 2 | 2 | Rupert Young | 12 | Rushden | 46.68 |
| 3 | 3 | Jacob Pawlyszyn | 12 | Wellingboro | 45.29 |
| 4 | 4 | Milan Rotgers | 12 | Northampton | 42.40 |
| 5 | 5 | Dexter Sykes | 12 | Corby | 44.42 |
| 6 | 6 | Eoin Pantos | 12 | Corby | 45.72 |
| 7 | 7 | Bryn Sensecall | 12 | Daventry | 46.70 |
| 8 | 8 | Oliver Norris | 12 | Rushden | 48.80 |