| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Edun Rowe | 18 | Northampton | 55.08 |
| 2 | 2 | M Vasconcellos-Blanch | 18 | Rushden | 54.94 |
| 3 | 3 | Sam Brylka | 17 | Corby | 54.04 |
| 4 | 4 | Tyler Coles | 20 | Daventry | 53.54 |
| 5 | 5 | Henry Knight | 21 | Rushden | 53.92 |
| 6 | 6 | Max Balderson | 23 | Rushden | 54.80 |
| 7 | 7 | Tyler Hollyman | 19 | Corby | 54.95 |
| 8 | 8 | Ethan Soppett-Moss | 17 | Corby | 55.12 |